Sebayang, H. T. and Fatimah, S. (2019) “The effect of tillage systems and dosages of cow manure on weed and soybeans yield (Glycine max, Merrill)”, Journal of Degraded and Mining Lands Management. Malang, Indonesia, 7(1), pp. 1959–1963. doi: 10.15243/jdmlm.2019.071.1959.