000 00293nam a2200133Ia 4500
008 160316s1989 xxu||||| |||| 00| 0 eng d
020 _a8185031193
100 _aK.C. Aggarwal
245 _aEnvironmental Biology
250 _a1st
260 _aINDIA
_bABP
_c1989
300 _a439
700 _a
_a
999 _c2753
_d2753