共 16 条
- [1] [Anonymous], 1955, OFFICIAL METHODS ANA
- [3] BELL J. M., 1954, CANADIAN JOUR AGRIC SCI, V34, P252
- [4] CAMPBELL J. B., 1961, JOUR RANGE MANAGEMENT, V14, P72, DOI 10.2307/3894719
- [5] Crampton EW, 1938, J NUTR, V15, P383
- [8] HEINRICHS D. H., 1956, CANADIAN JOUR AGRIC SCI, V36, P95
- [9] HEINRICHS DH, 1956, 991 CAN DEPT AGR PUB