1. Adsuar, J., and L. Lopez Matos. 1955. Reaction of someNicotiana species to the pepper and common tobacco-mosaic virus. Jour. Agric. Univ. Puerto Rico39: 168–171.
2. Anderson, P. J. 1925. Susceptibility ofNicotiana species, varieties and hybrids to tobacco wildfire. Phytopath.15: 77–84.
3. Apple, J. L. 1962. Transfer of resistance to black shank(Phytopthora parasitica var.,nicotianae) fromNicotiana plumbaginifolia toN. tabacum. (Abst.) Phytopath.1: 1.
4. Armstrong, G. M. 1947. Fusarium Wilt. Tobacco Dis. Coun., Proc. 9th Ann. Conf. 12.
5. Burbidge, Nancy T. 1960. The Australian species ofNicotiana L. (Solanaceae). Austral. Jour. Bot.8: 342–380.