Etoloy way mambilang more about numbers - Brett, Marietta; Manfalang, Arcadio (Manila Summer Institute of Linguistics-Philippines, Inc., 1974)
Published in cooperation with Bureau of Public Schools and Institute of National Language of the Department of Education and Culture, Manila, Philippines.
"Mathematics for Grade 2 in Balangao."--Title page verso.
"This book was prepared for the Natunin Public Schools, grade two."
Keywords: Arithmetic -- Study and teaching (Primary) -- Philippines -- Balangao (Natonin, Mountain Province); Arithmetic -- Study and teaching (Primary); Counting