Ghorai, Soumen Kumar. School o madrasha service commission bio science practice set pass / Soumen Kumar Ghorai. - / . - Kolkata : Jagari , 2012. - 416p. : ill.,table ; 23cm . NULL ISBN: RS150.00 (pbk) Subjects--Index Terms: BIO-SCIENCE GUIDE BOOK Dewey Class. No.: 570.76 / GHO/S