共 6 条
[2]
De Leenheer L., 1957, PEDOLOGIE, V7, P324
[3]
HOWARD PJA, 1965, OIKOS, V15, P229
[4]
LOFTUS NS, 1966, THESIS PENNSYLVANIA
[5]
PONOMAREVA VV, 1967, SOV SOIL SCI-USSR, P924
[6]
YOUNG J. L., 1964, SOIL SCI SOC AMER PROC, V28, P377