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 10 (July 22, 2020): 01–12. Accessed March 28, 2024. https://journals.ub.uni-koeln.de/index.php/JNRD/article/view/776.