Simplified laboratory procedures for wastewater examination / Prepared by Laboratory Manual for Operators Committee. - Lancaster, Pa. : Lancaster Press, 1971 - 62 p. : ill. ; 22 cm. - WPCF publication no. 18 .


Water--Pollution--Laboratory manuals.
Sewage disposal plants--Laboratory manuals.
Sewage disposal.
Water--Analysis.

628.3 / WPCF