Cesar C. Rufino, Ph. D. De La Salle UniversityManila, Philippines The DLSUAKI Working Paper Series represents research in progress. This paper is preliminary, unreviewed and subject to further revisions and final editing. The views and opinions in this paper are of the author(s) and do not represent the position or opinions of DLSU!AKI or its Members, nor the official position of any staff members. Limited copies of this paper can be requested from DLSU!Angelo King Institute, Room LS223, De La Salle University, 2401 Taft Avenue, 1004 Manila, Philippines. Please request papers by number and title. Tel. No: (632) 524!5333; (632) 524!5369; Fax No: (632) 524!5347. InterRegional Integration of the Philippine Rice Market Series 200806