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BRINKERHOFF F., 1966, MICH AGR EXP STA QUART BULL, V48, P344
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SOURCE AND PLACEMENT OF ZINC AND PHOSPHORUS FOR CORN (ZEA MAYS L.)
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ELLIS B. G., 1965, SOIL SCI SOC AMER PROC, V29, P635
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ZINC AVAILABILITY FOR CORN AS RELATED TO SOURCE AND CONCENTRATION IN MACRONUTRIENT CARRIERS
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1966, 30 (05)
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RESPONSE OF CORN (ZEA MAYS L) TO ZINC AS AFFECTED BY PLACEMENT AND NITROGEN SOURCE
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