Bhagavantam, S. Theory of groups and its application to physical problems / [by] S. Bhagavantam and T. Venkatarayudu. - New York : Academic Press, 1969. - xii, 279 p. : ill. ; 24 cm. Subjects--Topical Terms: Group theory.Mathematical physics. Dewey Class. No.: 530.15 / BHT 1969