- Johnson, William H.7
- North Carolina State University. Department of Biological and Agricultural Engineering6
- Campbell, John S.3
- Carreras Rothmans Ltd.2
- Imperial Tobacco Group2
- Oxford Tobacco Research Station2
- R.J. Reynolds Tobacco Company2
- Akehurst, B. C.1
- Djarum Kudus, PT1
- Duke University1
- Hartono, Bambang1
- Imperial Tobacco Company of Great Britain and Ireland1
- John Player & Sons1
- Leary, Stan M.1
- Lynn, William S.1
- North Carolina State University -- Research1
- Rothmans Industries1
- Schweitzer-Mauduit International, Inc.1
- Standard Commercial Tobacco Co, Inc.1
- Temple, David1