[1] A. Atman, B. Bakrie, and R. Indrasti, “Effect of Cow Manure Dosages as Organic Fertilizer on the Productivity of Organic Rice in West Sumatra, Indonesia,” IJEAB, vol. 3, no. 2, pp. 506–511, 2018, doi: 10.22161/ijeab/3.2.25.