Nsiah, Paul Kofi, and Wolfgang Schaaf. “Subsoil Amendment With Poultry Manure As Topsoil Substitute for Promoting Successful Reclamation of Degraded Mine Sites in Ghana”. JNRD - Journal of Natural Resources and Development, vol. 10, July 2020, pp. 01-12, https://doi.org/10.5027/jnrd.v10i0.01.