TY - BOOK AU - Abdel Rahim,Afaf Hassan AU - Kropff,M.J. ED - Universiteit Wageningen TI - Economic analysis of deforestation: the case of the gum arabic belt in Sudan SN - 90-8504-469-3 PY - 2006/// CY - Wageningen PB - Universiteit Wageningen N1 - Bibliogr., summary; Diss. doct ER -