The 1992 archaeological reexcavation of the Balobok rockshelter, Sanga Sanga, Tawi Tawi province, Philippines a preliminary report ([s.l. s.n.], 1993)
Reprint from the Journal of Historiographical Institute, Okinawa Prefectural Library, No. 18, March 1993.
Keywords: Excavations (Archaeology) -- Philippines; Philippines -- Antiquites