Iftitah, S. N., Rahmawati, N. B. A. ., Vatjarjinanto, V., & Utami, R. P. . (2023). The Effect of Different Types Manure and Altitude on Wheat Production. Gontor Agrotech Science Journal, 9(2), 102–108. https://doi.org/10.21111/agrotech.v9i1.9555