TY - BOOK TI - Environmental conservation AV - S938 .D37 1972 PY - 1972///] CY - New York PB - Wiley KW - Conservation of natural resources KW - United States KW - Ecology KW - Human ecology KW - Environment KW - âEcologie KW - Ressources naturelles KW - âEcologie humaine KW - ram KW - âEtats-Unis KW - Conservation des ressources naturelles KW - Environnement KW - Milieubeheer KW - gtt N1 - Includes bibliographical references.; ISBN 0 471 19601 0 Pbk: ¹3.00; Electronic reproduction; [S.l.]; HathiTrust Digital Library; 2010 UR - https://catalog.hathitrust.org/api/volumes/oclc/343225.html ER -