Hofmann, A. 1988. A FRUITFUL FRIENDSHIP BETWEEN AN ETHNOBOTANIST AND A PHYTOCHEMIST. Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales. 16, 63 (Dec. 1988), 89–90. DOI:https://doi.org/10.18257/raccefyn.16(63).1988.3698.