Early history of Philippine relations with foreign countries, especially China [microform]. - Beyer, Henry Otley 1883-1967 (Quezon City Photoduplication Service, University of the Philippines Library)
"Originally printed as an Historical Introduction to E. Arsenio Manuel's Chinese Elements in the Tagaog Language, Manila, 1948.
With: Delbeke, M. E. Religion and morals of the early Filipinos... Manila, 1928
Originally published in Manila, National Print., 1948