Dass, N.N. . Symmetry and Group Theory for Chemists / Textual Documents N.N.Dass. - 1st ed. / - New Delhi : Asian Books Private Limited , 2004. - Vii,236p. ; 22cm. index ISBN: 81-86299-59-9 Subjects--Index Terms: Chemistry Group Theory -Chemists PG-Chemistry Dewey Class. No.: 540 / Da 262 Sy