PakCat catalogue record Environmental science a study of interrelationships. By Enger, Eldon D. Bibliographic details ISBN069728655X PublisherWCB/McGraw Hill Publication placeBoston, Mass. Publication year1998 Edition6th ed. LanguageEnglish Material typeBook Physical descriptionxxi, 456 p. Additional authorsSmith, Bradley Fraser. SubjectsEnvironmental sciences.