Firmansyah, M. A. and Bhermana, A. (2020) “Characterization of Earthworms (Lumbriscus terestris) Population Under Several Area of Shallots Cultivation”, Jurnal Lahan Suboptimal : Journal of Suboptimal Lands, 9(2), pp. 208–217. doi: 10.33230/JLSO.9.2.2020.508.