000 00354nam a2200145Ia 4500
008 230917s9999||||xx |||||||||||||| ||und||
040 _e202000
_aMAIN
041 _aEnglish
082 _a363.7 S64E
100 _aSingh, R P
245 0 _aEnvironmental studies
260 _aNew Delhi
_bConcept Publishing
_c2012
300 _axvi, 344 p.
942 _cBK
999 _c171229
_d171229