共 7 条
[1]
ABRUNA FERNANDO, 1958, SOIL SCI SOC AMER PROC, V22, P539
[2]
BLACK CA, 1965, METHODS SOIL ANAL 2, P1043
[3]
BOULDIN DR, 1958, P SOIL SCI SOC AM, V22, P124
[4]
BOULDIN DR, 1960, P SOIL SCI SOC AM, V24, P464
[6]
STAROSTKA RW, 1955, P SOIL SCI SOC AM, V19, P123
[7]
TYLER K. B., 1958, AGRON JOUR, V50, P626