Ebooks by Samuel W. (Samuel William) Johnson
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Samuel W. (Samuel William) Johnson
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From the letter-files of S. W. Johnson, professor of agricultural chemistry in Yale university, 1856-1896, director of the Connecticut agricultural experiment station, 1877-1900;
How crops feed. A treatise on the atmosphere and the soil as related to the nutrition of agricultural plants
How crops grow A treatise of the chemical composition, structure, and life of the plant, for all students of agriculture
How crops grow. A treatise of the chemical composition, structure, and life of the plant, for all students of agriculture ..
How crops grow. A treatise on the chemical composition, structure and life of the plant, for students of agriculture. With numerous illustrations and tables of analyses
Peat and its uses as fertilizer and fuel
Peat and its uses as fertilizer and fuel [electronic resource]
1 book in mobi format
On August 11, 1937
, American author (b.
Henry James Pye
, English poet (b.
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