TY - BOOK AU - McLeish, Ewan TI - Keeping Water Clean T2 - Protecting Our Planet SN - 9780817249359 AV - TD365.M35 U1 - 363.739 PY - 1998/// CY - Texas : PB - Steck-Vaghn Company KW - Water quality management KW - Juvenile Literature N2 - Part of a series of books that provides a world wide survey of many environmental themes, reflecting the concerns of today. This book explains how environments are affected by human interference, as well as the benefits people gain by exploiting their environments ER -