VOL. XLII WASHINGTON, D. C, AUGUST-SEPTEMBER 1958 No. 7

VOL. XLII WASHINGTON, D. C, AUGUST-SEPTEMBER 1958 No. 7
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Better Crops With Plant Food

A Publication of the International Plant Nutrition Institute (IPNI)

VOL. XLII WASHINGTON, D. C, AUGUST-SEPTEMBER 1958 No. 7