De Leon, Hector S. The National internal revenue code annotated : (P.D. No. 1158, as amended up to R.A. No. 10021) / by Hector S. De Leon and Hector M. De Leon, Jr. - Tenth edition. - Manila : Rex Book Store, 2011. - xi, 1042 pages ; 24 centimeter. Includes bibliographical references. ISBN: 9789712355769 Subjects--Topical Terms: Internal revenue law--Philippines. Dewey Class. No.: LAW 343.59904 D37n 2011 vol. 1