共 12 条
[1]
AHRENS LH, 1954, SPECTROCHEMICAL ANAL
[2]
BRAIDECH MM, 1935, AMERICAN WATER WORKS, V27, P557
[3]
CLARKE FW, 1924, 135 US GEOL SURV PRO
[4]
COX CR, 1948, AM J PUB HEALTH YEAR
[5]
DURUM WH, 1960, 15 INT ASS SCIENT HY, P618
[6]
FRED M, 1947, OPT SOC AMER, V37, P279
[7]
HAFFTY J, 1960, 1540A US GEOL SURV W
[8]
KO R, 1957, HW48770 US AT EN COM
[10]
SILVEY WD, 1960, 1450B US GEOL SURV W