00421nam a2200133Ia 4500008004100000020002200041100002300063245008500086250001200171260003800183300002700221650002300248650001600271200909s9999    xx            000 0 und d  a978-971-23-9259-7  aDe Leon, Hector S.  cHector S. De Leon, Hector M. De Leon, Jr.aStudent's manual on the constitution/  a8th ed.  aQuezon City:bREX Bookstorec2019  axxx, 375 pagesc22 cm.  aConstitutional law  aPhilippines