Ong, Willie T. Cardiology blue book / Willie T. Ong ; Gregorio B. Patacsil, Jr. - 3rd edition. - [S.l.] : A.R. Ong, 2004. - x, 313 p. : black and white illustrations ; 24 cm., paperback. Includes index, and references. ISBN: 9719156252 Subjects--Topical Terms: Cardiology-- Handbooks, manuals, etc. Dewey Class. No.: Fil 612.12 On58 2004