000 00311nam a2200121Ia 4500
008 240112s9999 xx 000 0 und d
082 _aSET-K
_b574.5
100 _aSeth, G K
245 0 _aKnow your environment
260 _a New Delhi
_bNarosa Publishing House
_c1979
650 _aEcology; Biology
942 _cBK
999 _c25787
_d25787