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- [6] RESPONSE OF CORN (ZEA MAYS L) TO ZINC AS AFFECTED BY PLACEMENT AND NITROGEN SOURCE SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1966, 30 (06): : 767 - &
- [10] PHOSPHORUS AVAILABILITY TO CORN AS AFFECTED BY GRANULATING MANGANESE WITH ORTHO- AND PYROPHOSPHATE FERTILIZERS SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1969, 33 (03): : 460 - &