| Verfasser | Häufigkeit |
| Bamford, Rebecca |
7 |
| Bamford, C. G. |
4 |
| Adams, Charles R. |
3 |
| Bamford, Brian Reginald |
3 |
| Bamford, Katherine M. |
3 |
| Early, Michael P. |
3 |
| Robinson, H. |
3 |
| Ansell-Pearson, Keith 1960- |
2 |
| Bamford, C. R. |
2 |
| Bamford, David R. |
2 |
| Bamford, Julian |
2 |
| Bamford, Karen |
2 |
| Day, Richard R. 1939- |
2 |
| Knowles, Richard Paul 1950- |
2 |
| Robinson, Harry |
2 |
| Abbey, Ruth |
1 |
| Bamford, Colin Grahame |
1 |
| Bamford, David |
1 |
| Bamford, H. M. |
1 |
| Bamford, Jennifer |
1 |