共 4 条
[1]
Callan T., 1929, ANALYST, V54, P650
[2]
LAUG E. P., 1942, Journal of the Association of Official Agricultural Chemists, V25, P399
[3]
PALFREY GF, 1940, IND ENG CHEM ANAL ED, V12, P94
[4]
SANDELL EB, 1950, COLORIMETRIC DETERMI, P304