Growth and yield performance of cowpea (Vigna unguiculata L.) using bat during (Guano) as organic fertilizerz under Vintar, Ilocos Norte condition - Butac, Mark Anthony S. (City of Batac : MMSU, 2022)
Thesis ( BS in Agriculture -Major in Soil Science) -- Mariano Marcos State University-College of Agriculture, Food and Sustainable Development, Batac City
Bibliography: leaves 42-47