- North Carolina State University. Department of Biological and Agricultural Engineering✖[remove]10
- Johnson, William H.8
- North Carolina State University -- Research2
- Oxford Tobacco Research Station2
- R.J. Reynolds Tobacco Company2
- Akehurst, B. C.1
- Bowers, C. G., Jr.1
- Campbell, John S.1
- Carreras Rothmans Ltd.1
- Djarum Kudus, PT1
- Duke University1
- Hartono, Bambang1
- Huang, B. K.1
- Imperial Tobacco Company of Great Britain and Ireland1
- John Player & Sons1
- Leary, Stan M.1
- Liggett & Myers Tobacco Company1
- Lynn, William S.1
- National Science Foundation (U.S.)1
- North Carolina. Department of Agriculture1