Sangma, S.K. . AACR2R with MARC21: cataloguing practice for twenty-first century / by S.K. Sangma. - New Delhi : Centrum Press , 2013 - 312p : ISBN: 978-93-5084-050-4 Subjects--Topical Terms: Library, Cataloguing, AACR2R, MARC21 Dewey Class. No.: 2:12 / Q3