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How crops grow;: A treatise on the chemical composition, structure and life of the plant, for students of agriculture, with numerous illustrations and - Samuel William Johnson
From the letter-files of S. W. Johnson,: Professor of agricultural chemistry in Yale university, 1856-1896, director of the Connecticut agricultural e - Samuel William Johnson
How crops grow: A treatise on the chemical composition, structure and life of the plant, for students of agriculture. With numerous illustrations and - Samuel William Johnson
How crops grow;: A treatise on the chemical composition, structure and life of the plant for students of agriculture - Samuel William Johnson
How crops grow: A treatise of the chemical composition, structure, and life of the plant, for all students of agriculture - Samuel William Johnson
How crops feed: A treatise on the atmosphere and the soil as related to the nutrition of agricultural plants - Samuel William Johnson
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