共 26 条
[1]
ALWAY FREDERICK J., 1940, JOUR AMER SOC AGRON, V32, P913
[2]
BEESON KENNETH C., 1941, U S DEPT AGRIC MISC PUBL, V369, P1
[4]
CONRAD JOHN P., 1947, SOIL SCI SOC AMER PROC, V12, P275
[5]
CONRAD JOHN P., 1941, JOUR AMER SOC AGRON, V33, P37
[6]
CROCHERON BH, 1923, 1922 1923 ANN REP DI
[7]
CROCKER W, 1923, J AM SOC AGRON, V15, P129
[8]
Eaton F. M., 1935, US DEP AGRI TECH B, V448, P1
[9]
FRIED M, 1948, SOIL SCI SOC AM PRO, V13, P135
[10]
HUBERTY MR, 1948, HYDROLOGIC STUDIES C