| Verfasser | Häufigkeit |
| Roller, Lynn E. 1947- |
45 |
| Rossi, Luigi Enrico 1933-2009 |
30 |
| Rodin, Leonid E. |
23 |
| Reichl, Linda E. 1942- |
20 |
| Richards, Laura E. |
17 |
| Rhine, Louisa E. |
16 |
| Rondet, Laurent Étienne 1717-1785 |
16 |
| Reindl, Ludwig Emanuel 1899-1983 |
14 |
| Rose, Leo E. |
14 |
| Rautenberg, L. E. |
13 |
| Rossi, Luigi Enrico |
13 |
| Picken, Laurence Ernest Rowland 1909-2007 |
12 |
| Roux, Lucette Elyane |
11 |
| Rockley, Lawrence E. |
10 |
| Rivers, Larry E. 1950- |
9 |
| Raths, Louis E. |
8 |
| Roller, Lynn E. |
8 |
| Rosell, Lars-Erik |
8 |
| Elliott, Maud Howe 1854-1948 |
7 |
| Riggs, Lynne E. |
7 |