1. Chaplin, J. F.: Comparison of Type 32 and fluecured tobacco cultivars produced under flue-cured culture when air- and flue-cured; Tob. Sci. 19 (1975) 112-114.
3. Davis, D. L., G. B. Collins and P. D. Legg: Factors . influencing tobacco tar levels; 92nd Annual Report of the Kentucky Agricultural Experiment Station, 1979, 55-56.
6. Long, T. M., and W. L. Wilson: A method for the prediction of smoke particulate matter yield from ground tobacco analysis; Tob. Sci. 22 (1978) 81-83.
7. Matzinger, D. F., and E. A. Wernsman: Inheritance and relationships among plant characters and smoke constituents in flue-cured tobacco; Proc. 5th lnt. Tob. Scientific Congr., Hamburg, 1970, 11-18.
10. Randolph, H. R.: A gas chromatographic determination of nicotine in an isopropyl alcohol extract of smoke particulate matter; Tob. Sci. 18 (1974) 133-135.
11. Russell, M. A. H.: Smoking problems-An overview; National Institute on Drug Abuse Research Monograph 17 {Research on smoking behavior), 1979, 13-34.
12. Watson, D. C., R. W. Hale and H. R. Randolph: Automation of the gas chromatographic analysis for water in smoke particulate matter; J. Chromatogr. Sci. 8 (1970) 143-146.
13. Wernsman, E. A., D.F.Matzinger and W. W. Weeks: Potential for particulate .matter reduction through tobacco genetics and cultural modifications; Proc. of Amer. Chem. Soc. Symposium on recent advances in the chemical composition of tobacco and tobacco smoke, the 173rd Amer. Chem. Soc. Meeting, New Orleans, La., 1977, 340-364.