000 00304nam a2200121Ia 4500
008 170101s1983 xx 000 0 und d
082 _a634.9 NEG
100 _aNegi S.S.
245 0 _aEnvironmental Conservation
260 _bBishen Singh Mahendra Pal SIngh
_c1983
300 _a78 p.
942 _2ddc
_cB
999 _c828066
_d828066