共 20 条
[2]
ANDREW L. E., 1963, SOIL SCI SOC AMER PROC, V27, P693
[4]
GREGORY S, 1963, STATISTICAL METHODS
[5]
HAMMOND LUTHER C., 1958, SOIL SCI SOC AMER PROC, V22, P548
[6]
HOFFMAN DW, 1963, 35 ONT SOIL SURV REP
[7]
HOFFMAN DW, 1964, 38 ONT SOIL SURV REP
[8]
KNOX ELLIS G., 1965, SOIL SCI SOC AMER PROC, V29, P79
[9]
MADER DONALD L., 1963, SOIL SCI SOC AMER PROC, V27, P707
[10]
NELSON L. A., 1962, SOIL SCI SOC AMER PROC, V26, P497