Brown, Cecil H., "Growth and Development of Folk Botanical Life Forms in the Mayan Language Family,", 1979

Brown, Cecil H., "Growth and Development of Folk Botanical Life Forms in the Mayan Language Family,", 1979, Box: 1, Folder: 49. Nora England Papers, 2023-17. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/395050 Accessed September 26, 2026.