000 00317 a2200109 4500
008 181127b xxu||||| |||| 00|
100 _a Apha
245 _aStandara methods for the examination of water and wast water /
_c Apha
260 _awashington
_b Amer Public Health Assn;
_c1971
300 _a1328p.
942 _2ddc
_cBK
999 _c7467
_d7467