000 00267 a2200109 4500
008 190219b xxu||||| |||| 00| 0
100 _aKumar
245 _aEcology of Aquatic Insects /
_cKumar
260 _aDelhi
_bDaya publication
_c1987
300 _a635p.
942 _2ddc
_cBK
999 _c8601
_d8601