共 8 条
[1]
BETZ JD, 1950, J AM WATER WORKS ASS, V42, P49
[2]
CONNERS JJ, 1950, J AM WATER WORKS ASS, V42, P33
[3]
Diehl H., 1950, J AM WATER WORKS ASS, V42, P40
[5]
SNEDECOR GW, 1937, STATISTICAL METHODS, P54
[6]
SNELL FE, 1936, COLORIMETRIC METHODS, V1, P472
[8]
1945, OFFICIAL TENTATIVE M, P119