00367nam a22001577a 450000500170000002000180001704100130003508200150004810000220006324500310008525000120011626000420012830000090017065000120017970000180019120250803093142.0  a9789937941334  aEnglish   a570bPAU-b  aPaudel, Babu Ram   a Heritage Biology Grade XI  a1st ed.  aKathmandu bHeritage Publisher c2020  a628p  ascience  aTapol, Rojan