@article{000065681, title = "Ecological investigation of the Sahel savanna of northern Ferlo, Senegal: description of the region", author = "Bille, J.C. and Lepage, M. and Morel, G. and Poupon, H.", year = "1972", journal = "Terre et la Vie", volume = "26", number = "3", pages = "332-350", url = "https://eurekamag.com/research/000/065/000065681.php" }