Sheldon, Christopher. Environmental management systems : a step-by-step guide to implementation and maintenance / Christopher Sheldon and Mark Yoxon. - 3rd ed. - London ; Sterling, VA : Earthscan, 2006. - xiv, 280 p. : ill. ; 25 cm. Rev. ed. of: Installing environmental management systems. Rev. ed. 2002. ISBN: 9781844072576 (alk. paper) 1844072576 (alk. paper) LCCN: 2006276429 Subjects--Topical Terms: Environmental management. LC Class. No.: GE300 / .S52 2006 Dewey Class. No.: 658.4083 / SHE 2007