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Articles 30541 - 30570 of 30755
Full-Text Articles in Entire DC Network
Private Nonindustrial Ownership Of Forest Land: An Economic Theory Of Owner Motivation And Management Intensity, Robert O. Mcmahon
Private Nonindustrial Ownership Of Forest Land: An Economic Theory Of Owner Motivation And Management Intensity, Robert O. Mcmahon
Yale School of the Environment Bulletin Series
No abstract provided.
Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm
Salt Land Survey, 1962 : Report Of A Survey Of Soil Salinity In The Agricultural Areas Of Western Australia, L C. Lightfoot, S. T. Smith, C. V. Malcolm
Journal of the Department of Agriculture, Western Australia, Series 4
IN Western Australia there are within the agricultural areas about one million acres of salt land, largely within the 14-25 inch rainfall area used for cereal and wool production.
In March, 1962, farmers in 68 shires in the agricultural areas of Western Australia estimated that on their properties 305,270 acres of land previously cropped or sown to pasture had become salt affected. Of this total, 59,203 acres had gone salt in the seven years immediately before the survey.
Food Habits Of Bigmouth And Smallmouth Buffalo In Lewis And Clark Lake And The Missouri River, Thomas S. Mccomish
Food Habits Of Bigmouth And Smallmouth Buffalo In Lewis And Clark Lake And The Missouri River, Thomas S. Mccomish
Electronic Theses and Dissertations
Food habits were determined for 386 bigmouth buffalo and 277 smallmouth buffalo collected in 1962 and 1963 from Lewis and Clark Lake and the Missouri River. Young-of-the-year bigmouth buffalo stomachs contained 100 percent zooplankton. Bigmouth buffalo (330 to 530 millimeters) stomachs contained 99 percent zooplankton in 1952 and 95 percent in 1963. Digestive tracts of young-of-the-year smallmouth buffalo contained 99 percent copepods and one percent sand. Smallmouth buffalo (250 to 400 millimeters) contained about 65 percent zooplankton, 30 percent phytoplankton, and the remaining five percent consisted of chironomid larvae, plant detritus, and sand.
Planning New Farm Dams : Excavated Earth Tanks, J E. Watson, J. C. Grasby
Planning New Farm Dams : Excavated Earth Tanks, J E. Watson, J. C. Grasby
Journal of the Department of Agriculture, Western Australia, Series 4
A GOOD farm dam is a valuable asset, and well worth its cost, but there are many aspects to consider when a new dam is required. Careful planning with adequate testing and checking will help to get the best value for money and reduce the chance of costly failures.
This article discusses these aspects in relation to the excavated earth tank type of dam.
Calibration Of Irrigation Headgates By Model Analysis, Gaylord V. Skogerboe, Vaughn E. Hansen
Calibration Of Irrigation Headgates By Model Analysis, Gaylord V. Skogerboe, Vaughn E. Hansen
Reports
Introduction
The purpose of this research project was to calibrate the slide gates used by the D.M.A.D. Company (Delta, Melville, Abraham and Deseret Irrigation Companies). These gates, which number more than 600, are located throughout the distribution system. Each gate is placed in a concrete box 4 feet wide, 3-1/2 feet deep and 4 feet long. The structure is used as a means of diverting the water and is also used as a measuring device.
A similar structure, but with a different type of slide gate, was calibrated in 1914. At the time rating tables were prepared which listed the …
Geophysical Institute Annual Report 1963-64, University Of Alaska Fairbanks. Geophysical Institute
Geophysical Institute Annual Report 1963-64, University Of Alaska Fairbanks. Geophysical Institute
GI Reports
The 1963–64 Geophysical Institute Annual Report presents an overview of the year’s scientific research achievements across the Institute’s disciplines, alongside operational summaries covering finances, administrative changes, and other key activities.
Analytical Data, Walter A. Lawrance
Odor Report, Walter A. Lawrance
Pool Studies, Walter A. Lawrance
Mill Pollution, Walter A. Lawrance
Analytical Data, Walter A. Lawrance
Press Reports, Walter A. Lawrance
Aerial Application Of Evaporation-Reducing Chemicals, Development And Evaluation Of Equipment And Techniques, C. Earl Israelsen, Vaughn E. Hansen
Aerial Application Of Evaporation-Reducing Chemicals, Development And Evaluation Of Equipment And Techniques, C. Earl Israelsen, Vaughn E. Hansen
Reports
Aerial applications of both liquid and powder evaporation retardants have been made in parallel strips on large lakes for purposes of comparison. Films formed from powder spread more rapidly than did those from liquid, but usually both films ultimately spread to approximately equal widths and had the same degree of compression as determined with indicator oils. Evaporation retarding materials with large numbers of particles having diameters smaller than 75 microns are greatly affected by the wind. As the chemical is dispensed from the airplane. the fine particles drift with the wind and in some instances are carried onto the land …
A History Of Nebraska's Fishery Resources, David J. Jones
A History Of Nebraska's Fishery Resources, David J. Jones
Nebraska Game and Parks Commission: Publications
This report is a compilation of records pertaining to the distribution and management of fish in Nebraska. It was prepared to serve as both a technical and nontechnical history of the state's fisheries resource and past fisheries work. It can be used in planning future fisheries administration and management as well as providing interesting reading for many fishermen.
The information was collected by a search of the available literature including records of the Nebraska Game, Forestation and Parks Commission and by interviews with individuals. Included in the report are historical notes of early fish sightings, information on the native and …
Dissolved-Mineral Inflow To Great Salt Lake And Chemical Characteristics Of The Salt Lake Brine: Part 1- Selected Hydrologic Data, D. C. Hahl, C. G. Mitchell
Dissolved-Mineral Inflow To Great Salt Lake And Chemical Characteristics Of The Salt Lake Brine: Part 1- Selected Hydrologic Data, D. C. Hahl, C. G. Mitchell
Elusive Documents
No abstract provided.
Colorado River Storage Project, Glen Canyon Unit, Lake Powell, Area And Capacity Tables, Bureau Of Reclamation; United States
Colorado River Storage Project, Glen Canyon Unit, Lake Powell, Area And Capacity Tables, Bureau Of Reclamation; United States
Elusive Documents
No abstract provided.
A Progress Report On Commercial Cotton Growing On The Ord River Project, William John Toms
A Progress Report On Commercial Cotton Growing On The Ord River Project, William John Toms
Journal of the Department of Agriculture, Western Australia, Series 4
The recommendations given in this article have been built up from the experience of the author in growing 200 acres of cotton in the Ord River area during the 1962-63 season for the Department of Agriculture, from findings made by Kimberley Research Station, and from discussions with the present farmers in the area.
When a new form of agriculture is introduced into a new area techniques and ideas change rapidly as farmers become acquainted with their new environment and the new crops. The recommendations will therefore require constant revision.
A Comparison Of Some Limnological Changes Caused By The Brookings Sewage Treatment Plant On Six-Mile Creek And The Big Sioux River, Richard Ruelle
A Comparison Of Some Limnological Changes Caused By The Brookings Sewage Treatment Plant On Six-Mile Creek And The Big Sioux River, Richard Ruelle
Electronic Theses and Dissertations
Introduction: In the days of the early pioneers in South Dakota and other sparsely settled areas, there was no problem in finding a sufficient supply of water for drinking, cooking, and washing purposes. The problems of waste disposal were taken care of by the microorganisms in the soil, the microorganisms easily being able to keep pace with the few settlers. As cities and towns began to form, usually along a stream where there was an abundant supply of fresh water, sewage disposal became a growing problem. The easiest way to get rid of the sewage was to dump it into …
Developing A State Water Plan Utah's Water Resources--Problems And Needs--A Challenge, Utah Water Research Laboratory
Developing A State Water Plan Utah's Water Resources--Problems And Needs--A Challenge, Utah Water Research Laboratory
Reports
Of all the natural resources with which Utah has been endowed none is more vital to the social and economic well-being of the people than it water resource. We cannot manufacture water. We have found no acceptable substitute. Not one more drop of water is available for our use today than was available to the pioneers. Yet water uses and water demands have multiplied over the years. Since we can do little to change nature's water allotment to Utah we must learn how to utilize our existing supplies more judiciously. This means devoting increasingly more attention to problems of water …
Geophysical Institute Annual Report 1962-63, University Of Alaska Fairbanks. Geophysical Institute
Geophysical Institute Annual Report 1962-63, University Of Alaska Fairbanks. Geophysical Institute
GI Reports
The 1962-63 Geophysical Institute Annual Report, the inaugural issue of this series, presents an overview of the year’s scientific research achievements across the Institute’s disciplines, alongside operational summaries covering finances, administrative changes, and other key activities.
Pollution-Caused Fish Kills In 1962
Pollution-Caused Fish Kills In 1962
Other Publications in Wildlife Management
This publication is the third annual report of fish kills caused by pollution occurring in the United States. The reporting of pollution-caused fish kills was begun by the Public Health Service in the Spring of 1960 in an effort to secure additional information on the effects of pollution in the Nation's waters, to elicit the cooperation and assistance of conservation groups in the States to help determine causes of fish kills and assist in their abatement, and to place responsibility for fish kills where it belonged.
The Surgeon General asked all State conservation and fish and game agencies to assist …
Pool Studies, Walter A. Lawrance
Analytical Data, Walter Lawrance
Analytical Data, Walter A. Lawrance
Pool Studies, Walter A. Lawrance
Press Reports, Walter A. Lawrance
Press Reports, Walter A. Lawrance
Development Of Water Quality Criteria For Aquatic Life, Clarence M. Tarzwell
Development Of Water Quality Criteria For Aquatic Life, Clarence M. Tarzwell
United States Environmental Protection Agency: Publications
It is now recognized that water pollution is an important problem, that it becomes more widespread and serious as population and industry expand, and that something must be done if aquatic life resource are to be saved and their productivity maintained. In the past there has been a great deal of uncertainty in approaching this situation and a general lack of understanding of the details and ramification of the overall problem. In the efforts for the abatement of pollution, only a few clearcut objectives have been established. Knowledge is lacking as to what the objectives should be. There is still …
The Archeology Of The Lime Creek Site In Southwestern Nebraska, E. Mott Davis
The Archeology Of The Lime Creek Site In Southwestern Nebraska, E. Mott Davis
University of Nebraska State Museum: Staff and Affiliates, Publications
The Lime Creek site is a stratified Early Lithic (Paleo-Indian) camp site buried in the Terrace-2A alluvial fill of a valley in the dissected loess plains. Geological correlations indicate an early Valders (Wisconsin- IV) date. A radiocarbon date (No. C-471) of 9524 B.P. from just below Lime Creek I, the lowest occupation zone, must be taken only as a minimal possible age for the site. The animal bones in Lime Creek I are primarily of pronghorn and beaver, whereas those in Lime Creek III, the highest occupation zone, are exclusively of bison. The change in hunting patterns seems due to …
Bear Lake And Its Future, William F. Sigler
Bear Lake And Its Future, William F. Sigler
Faculty Honor Lectures
Even in such a wide-ranging and eternally changing field as biology, a few statements about certain aspects can be made with a minimum likelihood of their being refuted. In this class are the following: No two lakes are identical. Any given lake is simultaneously many things to many people. A lake is never static. The influence of a lake reaches far beyond its shores.
Bear Lake, Utah-Idaho, can be used to good advantage to exemplify the truth of these statements. It defies meaningful comparison with other lakes unless a mass of detailed statistics is employed. To the fisherman and water …