| Verfasser | Häufigkeit |
|---|---|
| Burack, Ethel | 3 |
| Hodapp, Robert M. | 3 |
| Burack, Elmer H. 1927- | 2 |
| Burack, Jacob A | 2 |
| Miller, Richard A. 1911-1992 | 2 |
| Smith, Robert D. | 2 |
| Zigler, Edward 1930-2019 | 2 |
| Burack, Jacob A. | 1 |
| Burack, Richard | 1 |
| Iarocci, Grace | 1 |
| Miller, Richard A. | 1 |
| Perera, Juan | 1 |
| Rondal, J. A | 1 |
| Spiker, Donna | 1 |
| Zigler, Edward 1930- | 1 |