Spanish Public Land Laws (English Translation): In the Philippine Islands and Their History to August 13, 1898. E-book. Formato PDF George P. Ahern   -  Forgotten Books, 2017  - 

At the time of the discovery of these islands the population was small and the area of unoccupied land extensive. Lands were granted to the discoverers and to the original inhabitants and their descendants who were to remain in the land.