Sharma, Balindra Kumar . Ucchatar Madhyamik Bybaharik Padartha Bijnan / Textual Documents Balindra Kumar Sharma. - 1st ed. / - Calcutta : Orient Book Co. , 1988. - 218p. : ill ; 22cm . ISBN: PB Subjects--Index Terms: Physics G-Physics Dewey Class. No.: 530 / Sa 11 Uc