000 00289nam a2200109Ia 4500
100 _aR K Trivedy, P K Goel, C L Trisal
942 _cBK
245 _aPractical methods in ecology and environmental science
260 _aEnviro Media Publ, Karad
_c1987
082 _a301.3 Tri
300 _a340p
999 _c34687
_d34687