共 55 条
[1]
ALEXANDER LT, 1939, TECH B US DEP AGR, V678
[2]
ALLING HE, 1947, B GEOL SOC AM, V58, P991
[3]
Allison L. E., 1942, JOUR AMER SOC AGRON, V34, P616
[4]
ANDERSON M. S., 1942, Technical Bulletin. United States Department of Agriculture, V813
[5]
Baver LD., 1956, SOIL PHYSICS, P489
[7]
Bradley WF, 1940, AM MINERAL, V25, P405
[8]
BRINDLEY GW, 1951, MINER MAG, V29, P57
[9]
BRINDLEY GW, 1953, MINERAL MAG, V30, P57