Adsuar, J., and L. López Matos. “Reaction of Some Nicotiana Species to the Pepper- and Common Tobacco-Mosaic Viruses”. The Journal of Agriculture of the University of Puerto Rico 39, no. 3 (July 1, 1955): 168–171. Accessed December 22, 2024. https://revistas.upr.edu/index.php/jaupr/article/view/12679.