This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
M. E. Snook
Tobacco and Health Laboratory, Science and Education Administration I Agricultural Research, United States Department of Agriculture, Athens, Georgia, U.S.A.
P. J. Fortson
Tobacco and Health Laboratory, Science and Education Administration I Agricultural Research, United States Department of Agriculture, Athens, Georgia, U.S.A.
O. T. Chortyk
Tobacco and Health Laboratory, Science and Education Administration I Agricultural Research, United States Department of Agriculture, Athens, Georgia, U.S.A.