Orphan trees of the forest : why do Ntumu farmers of Southern Cameroon protect trees in their swidden fields /Carrière, Stéphanie M. AGROFORESTERIE PRATIQUE CULTURALE BRULIS AGRICULTURE TRADITIONNELLE ARBRE FORESTIER ABATTAGE SELECTION REGENERATION ECONOMIE DE SUBSISTANCE FERTILITE DU SOL FACTEUR SOCIOECONOMIQUE GESTION DE L'ENVIRONNEMENT ARBRE ORPHELIN 2002 text https://www.documentation.ird.fr/hor/fdi:010029805 fdi:010029805 Carrière Stéphanie M.. Orphan trees of the forest : why do Ntumu farmers of Southern Cameroon protect trees in their swidden fields. 2002, 22 (1), 133-162 EN CAMEROUN