共 21 条
[1]
ALEXANDER M., 1965, SOIL SCI SOC AMER PROC, V29, P1
[4]
BARTHEL WF, 1966, ASA8 SPEC PUBL
[6]
BURCHFIELD HP, 1965, GUIDE ANALYSIS PESTI, V1
[7]
BURCHFIELD HP, 1965, GUIDE ANALYSIS PESTI, V2
[8]
BURKE JA, 1966, J ASSOC OFF ANA CHEM, V49, P999
[9]
DUSTMAN EH, 1966, ASA8 SPEC PUBL, P109
[10]
Edwards C. A., 1964, Soils and Fertilizers, V27, P451