Jong, K. de

Heilmann, L.C.; Jong, K. de; Lent, P.C.; Boer, W.F.de 2006. Will tree euphorbias (Euphorbia tetragona and Euphorbia triangularis) survive under the impact of black rhinoceros (Biceros diceros minor [sic]) browsing in the Great Fish River Reserve, South Africa?. African Journal of Ecology 44: 87-94, figs. 1-3, table 1.