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- [4] N-FERTILIZER EFFICIENCY ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1987, 194 : 23 - FERT
- [8] RESPONSE OF WINTER-WHEAT TO N-FERTILIZER - DYNAMIC-MODEL FERTILIZER RESEARCH, 1987, 12 (02): : 139 - 156
- [10] FURTHER-STUDIES ON THE RESPONSE OF MAIZE INBRED LINES TO N-FERTILIZER MAYDICA, 1984, 29 (02): : 141 - 150