A study of the land productivity of Nueva Ecija and its implications for science teaching in the Central Luzon Polytechnic College - Barnachea, Cosme P. (Quezon City, 1972)
Thesis (M.A.T. General Science) -- University of the Philippines College of Education, Diliman.
Keywords: Central Luzon -- Polytechnic College; Land -- Philippines -- Nueva Ecija. .; Agriculture -- Economic aspects -- Nueva Ecija