[1. Tso, T. C.: Physiology and biochemistry of tobacco plants; Dowden, Hutchinson and Ross, Inc., Stroudsburg. Pa., 1972.]Search in Google Scholar
[2. National Cancer lnstitute Smoking and Health Program, Report No. 1, G. B. Gori, ed.; DHEW Pub. No. (NIH) 76-905, Bethesda, Md., 1976.]Search in Google Scholar
[3. Tso, T. C., and J. F. Chaplin: Simple correlation and multiple regression among leaf characteristics, smoke components, and biological responses of bright tobaccos; USDA Technical Bulletin 1551, Washington, D. C., 1977. ]Search in Google Scholar
[4. Tso, T. C., and R. A. Andersen: Tobacco, in: Encyclopedia of Inc. Chem. Analysis; John Wiley and Sons, Inc., New York, 1974,]Search in Google Scholar