00346nam a22001457a 450000500170000002000180001704100120003508200150004710000190006224500350008125000120011626000510012830000090017965000120018820260624134816.0  a9789937744386  aEnglish  a570bBHA-p  aBhatt, Man Dev  aPrinciples of biology grade xi  a5th ed.  aKathmandu bAdvance Saraswati Prakashan c2083  a594p  aScience