00769cam a22002297a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001900102110003900121245006600160250001200226260006000238300002000298500012900318650002200447650003200469710003800501CHAP20220329134352.0971013s1981            r     00010     d  a19460  a20432  a24520  cCHAP  a543.3bA5 1981  aAmerican Public Health Association 0aStandard methods for the examination of water and waste water  a15 ed,.  aWashington :bAmerican Public Health Association,c1981  a1134 p.b: ilus  aSup. Selected analytical methods approved and cited by the United States Environmental Protection Agency (s.l.) 1981. 106 p.14aAguaxAnálisis.14aAguas residualesxAnalisis.0 aAmerican Water Works Association.