EXCLUDING FROM THE OPERATION OF PROCLAMATION NO. 453 DATED DECEMBER 23, 1953 WHICH ESTABLISHED THE AMAI PAKPAK (FORMERLY CAMP KEITHLEY) MILITARY RESERVATION A CERTAIN PORTION OF THE LAND EMBRACED THEREIN SITUATED IN MATAMPAY, CITY OF MARAWI, ISLAND OF MINDANAO AND DECLARING THE SAME OPEN TO DISPOSITION UNDER THE PROVISIONS OF THE PUBLIC LAND ACT.