Cyril G. (Cyril George) Hopkins

1866 - 1919

3 books

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Books by Cyril G. (Cyril George) Hopkins

Browse all 3 books by this author

Cover of Nitrogen Bacteria and Legumes: With special reference to red clover, cowpeas, soy beans, alfalfa, and sweet clover, on Illinois soils

Nitrogen Bacteria and Legumes: With special reference to red clover, cowpeas, soy beans, alfalfa, and sweet clover, on Illinois soils

Nitrifying bacteria

Cover of The Farm That Won't Wear Out

The Farm That Won't Wear Out

Agriculture

Cover of The Story of the Soil; from the Basis of Absolute Science and Real Life

The Story of the Soil; from the Basis of Absolute Science and Real Life

Soils