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   S:: Samuel W. (Samuel William) Johnson : download and read ebooks
Agricultural chemistry--soil-analysis

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]

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Thomas Weston1 book in mobi format