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