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Author: Guttay, John Robert, 1924-
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Subject: Crop yields
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Electronic Theses & Dissertations
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Theses
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English
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In Copyright
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Subject
Crops--Composition
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Phosphate rock
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Phosphatic fertilizers
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Superphosphates
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The effectiveness of rock phosphate and superphosphate on yield and composition of crops
Guttay, John Robert, 1924-
Text (1959)
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Electronic Theses & Dissertations
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