Sharma, A. K. Group theory [Book] / A. K. Sharma. - New Delhi : Discovery publishibng house, c2004. - 259 p. : ill. ; 22 cm. - DPH Mathematics Series . ISBN: 8171418783 Nat. Bib. No.: GBA859191 bnb Subjects--Topical Terms: Group theory. Dewey Class. No.: 512.2