000 00259nam a22001217a 4500
999 _c437
_d437
020 _a9789556711530
082 _a570.72
_bAri
100 _aAriyasinghe.K
245 _aBiology
_cAriyasinghe.K
260 _bSarasavi publishers
_c2010
300 _a76p.
942 _cR