共 10 条
[1]
BREWER ROBERT F., 1966, P180
[4]
LARSEN S, 1969, 54 PHOSPH AGR B DOC, P11
[6]
SANCHIS J. M., 1934, Industrial and Engineering Chemistry. Analytical edition, V6, P134, DOI 10.1021/ac50088a017
[8]
SILLEN LG, 1964, 17 CHEM SOC SPEC PUB, P264
[9]
SWAIN DJ, 1962, 52 COMM BUR SOILS TE, P102
[10]
1967, ORION INSTRUCTION MA