Medicinal plants in Tanzania. A documentation and evaluation of the local use of plants in Machame and Tanga

botanical composition coasts composition botanique cosecha costa domestication drug plants ecologia vegetal ethnobotany etnobotanica evaluation forest reserves harvesting health highlands hogares households indigenous knowledge medicamentos tradicionales plant ecology plantas medicinales plantas silvestres plante medicinale plante sauvage reservas forestales salud sostenibilidad sustainability tanzania tanzanie traditional medicines use value valeur d'utilisation valor de uso wild plants