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R.F. Severson
Tobacco and Health Laboratory, Science and Education Administration / Agricultural Research, United States Department of Agriculture, Athens, Georgia, U.S.A.
K.L. McDuffie
Tobacco and Health Laboratory, Science and Education Administration / Agricultural Research, United States Department of Agriculture, Athens, Georgia, U.S.A.
R.F. Arrendale
Tobacco and Health Laboratory, Science and Education Administration / Agricultural Research, United States Department of Agriculture, Athens, Georgia, U.S.A.
O.T. Chortyk
Tobacco and Health Laboratory, Science and Education Administration / Agricultural Research, United States Department of Agriculture, Athens, Georgia, U.S.A.