共 21 条
- [1] BARROWS HAROLD L., 1962, SOIL SCI SOC AMER PROC, V26, P443
- [3] CLARKSON DT, 1969, ECOLOGICAL ASPECTS M
- [4] FOY C. D., 1965, AGRON J, V57, P413
- [5] FOY C. D., 1964, SOIL SCI SOC AMER PROC, V28, P27
- [8] FOY CD, 1967, AGRON J, V31, P513
- [9] FOY CD, IN PRESS
- [10] GREENLEAF WH, 1969, J AM SOC HORTIC SCI, V94, P248