TY - BOOK AU - Enger,Eldon D. AU - Smith,Bradley F. TI - Environmental science: a study of interrelationships SN - 0070171661 (pbk.) AV - GE105GE105GE105GE105GE105GE105GE105 .E54 .E53.E53.E53.E53.E53.E53 U1 - 363.7 20 PY - 2010/// CY - Boston PB - McGraw-Hill KW - Environmental sciences N1 - Includes bibliographical references and index ER -