Widana, M., Antu, E. S., & Romi Djafar, R. D. (2020). RANCANG TUGAL PUPUK JAGUNG TIPE VERTICAL. JTPG (Jurnal Teknologi Pertanian Gorontalo), 5(2), 61 -. https://doi.org/10.30869/jtpg.v5i2.680