TY - BOOK ED - Water Environment Federation. ED - International Water Association ED - American Water Works Association TI - International standard units for water and wastewater processes T2 - WEF manual of practice SN - 9781843395447 PY - 2011/// CY - Alexandria, Va. USA PB - Water Environment Federation KW - Sewage disposal plants KW - Standards KW - Water treatment plants N1 - Includes bibliographical references and index ER -