00612nam a2200169 a 450000500170000000800410001704000210005805000280007910000200010724500950012725000120022226000410023430000410027550000570031665000480037370000210042120240215183528.0081119s19uu    xx            00    eng d  6CLRCaCLRCcCLRC  aGE 105 E54 1992bCL735110aEnger, Eldon D.10aEnvronmental science :ba study of interrelationships /cEldon D. Enger, Bradley F. Smith.  a4th ed.0 aDubuque, IA :bWm. C. Brown,cc1992.  axiv, 514 pages;bcolor illustrations  aIncludes appendices, references, glossary and index.  aEnvironmental sciencesxStudy and teaching.  aBradley F. Smith