000 00316nam a2200145Ia 4500
008 220901s2012 xx 000 0 eng d
082 _a628 CHH
100 _aChatwal,R.J
245 0 _aEnvironmental sciences
250 _a2
260 _bUDH
_c2012
_aDelhi
300 _a376
650 _aBiology
942 _2ddc
_cBK
999 _c1994
_d1994