Christiansen, Sofus. “Volkmar Vareschi: VEGETATIONSÖKOLOGIE DER TROPEN Stuttgart 1980, 293 s., ill., 23 Cm, DM 96,-. Verlag Eugen Ulmer”. Geografisk Tidsskrift - Danish Journal of Geography 81 (January 1, 1981). Accessed December 6, 2025. https://tidsskrift.dk/geografisktidsskrift/article/view/45255.