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Crop yields
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The effectiveness of rock phosphate and superphosphate on yield and composition of crops
Guttay, John Robert, 1924-
Text (1959)
Part of
Electronic Theses & Dissertations
A study of the comparative merits of rock phosphates and superphosphate on a grain crop seeded to a hay mixture on three major soil types of the eastern townships of Quebec, Canada
Finn, Basil Joseph
Text (1955)
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