共 11 条
- [2] FUJIMOTO G, 1949, SOIL SCI SOC AM P, V13, P166
- [3] HOLMES RS, 1945, SOIL SCI, V59, P82
- [4] Hurwitz Charles, 1944, FOOD RES, V9, P348
- [5] KIDSON E. B., 1937, New Zealand Journal of Science and Technology, V18, P694
- [6] KIDSON E. B., 1938, Journal of the Society of Chemical Industry, V57, P95
- [8] PIPER CD, 1944, SOIL PLANT ANALYSIS, P272
- [9] Sandell E.B., 1944, COLORIMETRIC DETERMI
- [10] YOUNG RS, 1948, ACS MONOGRAPH