00460    a2200157   4500020001500000082001500015100002700030245006400057250001200121260004400133300002100177650002700198650001900225650003300244700002500277  a0070647720  a363.7bCUN  aCunningham, William P.  aPrinciples of environmental sciencebinquiry & applications  a4th ed.  aNew DelhibTata McGraw-Hillc2008g2008  axxii,410p.c28cm  aEnvironmental problems  aSocial science  aSocial problems and services  aCunningham, Mary Ann