ADDO-FORDJOUR, P.; YEBOAH-GYAN, K.; LAWSON, B.; AKANWARIWIAK, W. Diversity and Distribution of Ferns on the Campus of the Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana. Journal of Science and Technology, v. 27, n. 1, 16 Feb. 2016.