共 9 条
- [1] ADERKAS OJ, 1930, MITTEIL FORSTL VERSU, V5, P41
- [2] Bodman GB., 1937, SOIL SCI SOC AM P, V2, P45, DOI 10.2136/sssaj1938.036159950002000C0007x
- [3] KITTREDGE J, 1940, T AM GEOPHYS UNION, P406
- [4] KITTREDGE J, 1941, T AM GEOPHYS UNION, P906
- [5] LAURITZEN C. W., 1940, JOUR AMER SOC AGRON, V32, P853
- [6] MOORE ROSS E., 1939, HILGARDIA, V12, P383
- [7] NEAL OR, 1937, SOIL SCI SOC AM P, V2, P35
- [8] Smith R. M., 1942, SOIL SCI SOC AMER PROC, V7, P114
- [9] WALLIHAN ELLIS F., 1940, JOUR AMER SOC AGRON, V32, P395