https://www.slideshare.net/dpennoyer/pennoyer-tawbuid73-483-4593110 Pennoyer Tawbuid 73-4, 83 529 views ... Douglas Pennoyer Follow Published on Jun 23, 2010 Philippine Tribe, contact dpennoyer@aol.com for right to use permission Pennoyer Buhid and Tawbuid: A new subgrouping Mindoro Pennoyer, F. Douglas. 1980. "Buhid and Tawbuid: A new subgrouping Mindoro, Philippines." In Paz B. Naylor (ed.), Austronesian studies: Papers from the Second Eastern Conference on Austronesian languages, 265-271. Ann Arbor, University of Michigan: Center for South and Southeast Asian Studies.