共 50 条
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- [3] TRACER AND NONTRACER METHODS FOR STUDYING NITROGEN LOSSES FROM AGRICULTURAL SOILS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1972, 164 (AUG-S): : 6 - &
- [10] NITROGEN IMMOBILIZATION IN FLOODED SOILS SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1970, 34 (02): : 218 - +