共 8 条
[1]
BROWNING GM, 1943, P SOIL SCI SOC AM, V8, P91
[2]
NIJHAWAN SD, 1948, SOIL SCI SOC AM P, V12, P50
[5]
VALLE JMD, 1948, MICROMERETICS
[6]
Van BAVEL C. H. M., 1950, SOIL SCI SOC AMER PROC, V14, P20
[8]
YODER ROBERT E., 1936, JOUR AMER SOC AGRON, V28, P337