Author

Cyril Hopkins

9 books found

Cover of Farm That Won't Wear Out

Farm That Won't Wear Out

Cyril G. Hopkins · First published 1913 · Latest edition 2022

Cover of Soil Fertility and Permanent Agriculture

Soil Fertility and Permanent Agriculture

Cyril G. Hopkins · First published 1910 · Latest edition 2022

Cover of Question Summary to Accompany Soil Fertility and Permanent Agriculture,

Question Summary to Accompany Soil Fertility and Permanent Agriculture,

Cyril G. Hopkins · First published 2018

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

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

Cyril G. Hopkins · First published 2006

Cover of Laboratory Manual for Soil Fertility

Laboratory Manual for Soil Fertility

James Harvey Pettit, Cyril G. Hopkins · First published 2008

Cover of The Story of the Soil

The Story of the Soil

Cyril G. Hopkins · First published 1913

Cover of Soil fertility laboratory manual

Soil fertility laboratory manual

Cyril G. Hopkins · First published 1910

Cover of Laboratory manual for soil fertility

Laboratory manual for soil fertility

Cyril G. Hopkins · First published 1905

Cover of The chemistry of the corn kernel ..

The chemistry of the corn kernel ..

Cyril G. Hopkins · First published 1898