NGOMPE-DEFFO, T.; KOUAM, E. B.; BEYEGUE-DJONKO, H.; ANOUMAA, M. Evaluation of the Genetic Variation of Cowpea Landraces (Vigna unguiculata) from Western Cameroon Using Qualitative Traits. Notulae Scientia Biologicae, v. 9, n. 4, p. 508-514, 20 Dec. 2017.