000 00286nam a2200121Ia 4500
008 170101s1987 xx 000 0 und d
082 _a577.3 LAL
100 _aLal, J.B
245 0 _aEnvironmental conservation
260 _aDehradun
_bIBD
_c1987
300 _aP.111
942 _2ddc
_cBK
999 _c168381
_d168381