Clesceri, Lenore S, Ed., et al. Standard methods for the examination of water and wastewater / Clesceri, Lenore S, Ed., et al. - 20 ed. - American Public Health Association, Washington, 1998 - p. ; 22 cm. ISBN: 9780875532400 Subjects--Topical Terms: Wastewater treatment Dewey Class. No.: CHE 628.3 CLE-S20