DE LEON , HECTOR M. JR. The national internal revenue code : annotated, vol. 1 / - 8th ed. - Manila, Philippines : Rex Book Store, c2003 - xi, 898 p. : 23 cm. ISBN: 971-23-3851-7 Subjects--Topical Terms: Dewey Class. No.: Fil. 343.59904 D278 2003