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Full-Text Articles in Mineral Physics
Maine Gems And Gem Minerals, Maine State Museum
Maine Gems And Gem Minerals, Maine State Museum
Maine Collection
Maine Gems and Gem Minerals
The Maine State Museum - Printed under Appropriation No. 1741.1
Sections Include : "An Introduction to the Gemstones of Maine", "Tourmaline", "Beryl", "Quartz Family Gems", "Topaz", "Gold", "Miscellaneous Gem Varieties", "Maine's 'Lost' Gem Mines", "Hamlin Necklace", etc
Soil Structure Changes Under Wheatbelt Farming Systems, T C. Stoneman
Soil Structure Changes Under Wheatbelt Farming Systems, T C. Stoneman
Journal of the Department of Agriculture, Western Australia, Series 4
A review of 14 years of Department of Agriculture research into the effects of wheatbelt fanning practices on soil structure reaches the general conclusion that cultivation and grazing practices influence soil structure, and that structure can be improved by soil amendments and pasture growth.
Little data has been obtained to relate plant growth to improved soil structure, as measured.