Isang masusing pag-aaral sa ortographia ng wikang Pilipino [microform] - Diosomito, Roberta P. (Quezon City Photoduplication Service, University of the Philippines Library, 1974)
Microfilmed with 9 other titles.
Thesis (M.A.)--Abad Santos Educational Institution, Manila.
Originally published in 1971.
Keywords: Pilipino language -- Orthography and spelling