Browsing by Author "MacCarthy, Patrick 40886."
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Humic substances in soil and crop sciences. Selected readings : Proceedings of a symposium cosponsored by the International Humic Substances Society.
Symposium December 2 : Chicago, Illinois : 40883.; Bloom, P.R. 40884.; Clapp, C.E. 40885.; MacCarthy, Patrick 40886.; Malcom, R.L. 40887.; International Humic Substances Society 40888.