February 1, 1980BP 56 1980Batas Pambansa - An Act Creating the Municipality of Sibagat, Agusan Del Sur
February 1, 1980BP 57 1980Batas Pambansa - An Act Transferring the Seat of Government of the Municipality of Sitangkai, Province of Tawi-Tawi, to Sibutu Proper, Barangay Sibutu