Baruah , B K . Ucchatar Madhyamik Padartha Bijnan / Textual Documents Birendra Kr Baruah. - 9th ed / - Calcutta : Asom Book Depo , 1988. - 256p. ; 23 cm. - Vol. II- ISBN: HB Subjects--Index Terms: Physics T/G-Physics Dewey Class. No.: 530 / Ba 469 Us