- Morlan, R. E. | Mathews, J. V. | Roughley, R. E. 644
- Roughley, R. E. 343
- Roughley, R. E. | Roughley, M. L. 332
- R.E. Roughley 229
- Wendy Porras Vega; R.E. Roughley 206
- R.E.Roughley 168
- Short, Porras, Roughley 126
- Roughley, Robert E. 111
- M. A. Ivie, R. E. Roughley 77
- Roughley, Robert E. ; Roughley, M.L. 71
- R.E. Roughley & R.D. Kenner 47
- Morlan | Matthews | Roughley, R. E. 45
- Short & Roughley 42
- Roughley, R. E. | Marshall, S. A. 38
- R.E.Roughley, Arctic Ecology 36
- Morlan, Dr. Richard E. ; Matthews, Dr. J.V. Jr. ; Roughley, Robert E. 28
- Roughley, R 28
- D. Wade, J.K. Diehl & R.E. Roughley 25
- Roughley, Robert 25
- Hooper, R. L. | Ball, G. E. | Ball, K. E. 23
- Beutel, R. G. | Roughley, R. E. 21
- R. E. Roughley 20
- Morlan, R. E. | Matthews, J. V. | Roughley, R. E. 19
- Folkerts | Roughley 19
- D. Pollock & R.E. Roughley 17
- Morlan | Matthews | Roughley 16
- Olsen, C. | Roughley, R. E. | Roughley, M. L. 15
- Morris | Matthews | Roughley, R. E. 14
- Lafontaine, J. D. | Roughley, R. E. 14
- M. Alperyn, R.E. Roughley 14
- Roughley R.E. 14
- Beutel & Roughley 13
- R.E.Roughley, M.Alperyn 12
- Wolfe, G. W. | Roughley, R. E. 12
- Beutel, R. ; Roughley, Robert E. 12
- Roughley & Beutel 10
- Roughley, Robert E. ; Shaw 10
- Roughley & Shepard 10
- Roughley, Robert E. ; Spence, John R. 9
- Pollock, D. A. | Roughley, R. E. 8
- Morlan, Dr. Richard E. ; Roughley, Robert E. ; Matthews, Dr. J.V. Jr. 8
- D.A. Pollock, J.K. Diehl & R.E. Roughley 7
- Roughley, Robert E. ; Marshall, Stephen A. 7
- Pollock, D. A. | Diehl, J. K. | Roughley, R. E. 6
- Roughley & Shaverdo 6
- Olsen, Roughley, Roughley 6
- A. Roughley, R. E. Roughley 5
- Roughley, R. E. | Ball, G. E. | Ball, K. E. 5
- Roughley, R. E. | Spence, J. R. 5
- Roughley | Pollock 5