000 00555nam a2200193 a 4500
020 _a8121916542
020 _a9788121916547
082 _a363.7
_bAST
100 _aAsthana, D.K. ;
245 _aEnvironment : problems and solutions
250 _a2nd Revised Edition.
260 _aNew Delhi :
_bS.Chand & Company,
_c2001.
300 _axix, 434 p. :
_billustrations ;
500 _aIncluded Glossary & Index.
650 _aEnvironmental sciences.
650 _aNature -- Effect of human beings on.
700 _aAsthana, Meera ;
942 _cREF
999 _c12894
_d12894