De Leon, Hector S. Administrative law : text and cases / Hector S. De Leon and Hector M. De Leon Jr. - 7th ed. - Manila : Rex Book Store, [2013]. - xxvii, 479 pages ; 24 cm ISBN: 9789712365225 (paperback) Subjects--Topical Terms: Administrative law--Philippines. LC Class. No.: KPM2450 Dewey Class. No.: 342.59906