000 00249nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSingh, V.B.
245 0 _aEnvironmental Studies
260 _aMeerut
_bIPH
_c2005
300 _a386p.
942 _cBK
999 _c11498
_d11498