共 9 条
- [1] DAVIDSON S. E., 1956, Soil Science Society of America. Proceedings, V20, P320
- [2] FEIT EJ, 1953, 3 INT C SOIL MECH F, V1, P24
- [4] KRUSEKOPF HH, 1962, 1951 SOIL SURV SER U
- [5] LAURITZEN CW, 1942, SOIL SCI SOC AMER P, V6, P113
- [6] MARSHALL CE, 1944, 386 MISS AGR EXP STA
- [7] SNEDECOR GW, 1950, STATISTICAL METHODS, pCH7
- [8] Soil Survey Staff, 1960, SOIL CLASSIFICATION
- [9] [No title captured]