Barua, Birendra Kumar . Padartha Bijnan / Textual Documents Birendra Kumar Barua. - 6th ed / - Guwahati : Asom Prakashan , 1987. - 133 p : ill. ; 22 cm . ISBN: HB Subjects--Index Terms: T/G-Physics Dewey Class. No.: 530 / Ba 288 Us