000 00279nam a22001337a 4500
020 _a9788121908597
082 _a570.1/VER
100 _aVerma P.S.
245 _aEnviormental Biology
260 _aDelhi
_bS.Chand.Co.
_c2023
300 _a591
650 _aBiology
942 _cBK
999 _c37398
_d37398