00652nam a22002297a 450000500170000001000130001702000230003003500130005303700170006604000120008308200180009510000180011324500450013125000160017626000400019227000580023230000310029050000510032165000140037265000260038665000100041220170124110020.0  aB-164334  c150.00a818632187X  aB-164334  bCen Lib/ Ret  aDPLbEN  a372.357bCHA   aChauhan, A.S.  aEnvironmental studies /cby A.S. Chauhan  a2nd rev. ed  aNew DelhibM/S Jain Brothers c2006  a16/873, East Park Road, Karol BaghbNew Delhie110005  axv,408p. :c21cm(Hb)bill.  aIncludes bibliographical references and index.  aEducation  aEnvironmental studies  aLabor