00509nam a2200193Ia 4500008004100000040000600041041001200047082001100059082001100070100002000081245004300101245002000144260001400164260002300178260000900201300005500210365002500265501002500290141004s9999    xx            000 0 und d  ca  aEnglish  a363.73  bPRA/EN  a   Pramod Singh  aEnvironmental pollution and management  c   Pramod Singh  aAllahabad  bChugh publications  c1985  a243 p.                                              aRs.170                a3B2