共 17 条
[1]
BAVER LD, 1936, AM SOIL SURVEY ASS B, V17, P28
[2]
BROWNING GM, 1937, P SOIL SCI SOC AM, V2, P85
[3]
BROWNING GM, 1941, P SOIL SCI SOC AM, V6, P96
[6]
MARTIN T. L., 1942, Proceedings. Soil Science Society of America, V7, P215
[7]
Middleton HE, 1930, USDA TECH B, V178
[9]
OLMSTED LB, 1930, USDA TECH B, V170
[10]
PEELE T. C., 1940, JOUR AMER SOC AGRON, V32, P204