TY - BOOK AU - Giorgi,John ED - ebrary, Inc. TI - Math for wastewater treatment operators grades 1 and 2: a guide to preparing for wastewater treatment operator certification exams AV - TD745 .G56 2009eb U1 - 628.301/51 22 PY - 2009/// CY - Denver, Colo. PB - American Water Works Association KW - Sewage KW - Purification KW - Mathematics KW - Problems, exercises, etc KW - Sewage disposal plants KW - Employees KW - Certification KW - Water KW - Water treatment plants KW - Engineering mathematics KW - Formulae KW - Electronic books KW - local N1 - Includes bibliographical references (p. 357-358); Electronic reproduction; Palo Alto, Calif.; ebrary; 2012; Available via World Wide Web; Access may be limited to ebrary affiliated libraries UR - http://site.ebrary.com/lib/rucke/Doc?id=10522365 ER -