Howard-Williams, C. (1970). "The ecology of Becium homblei in Central Africa with special reference to metalliferous soils". Journal of Ecology. 58 (3): 745–763. doi:10.2307/2258533. JSTOR2258533.
jstor.org
Howard-Williams, C. (1970). "The ecology of Becium homblei in Central Africa with special reference to metalliferous soils". Journal of Ecology. 58 (3): 745–763. doi:10.2307/2258533. JSTOR2258533.