| Author | Popularity |
| Roland Holst-Van der Schalk, Henriette 1869-1952 |
7 |
| Schalk, Peter Hrsg |
4 |
| Schalk, Peter |
3 |
| Dietzgen, Eugen 1862-1929 |
2 |
| Dietzgen, Joseph 1828-1888 |
2 |
| Kautsky, Karl 1854-1938 |
2 |
| Roland Holst-van der Schalk, Henriette |
2 |
| Schalk, Karl |
2 |
| Brendel, Cajo Verfasser eines Vorworts |
1 |
| Chorier, Nicolas |
1 |
| Devereux, Charles |
1 |
| Dietzgen, Eugen Herausgeber |
1 |
| Holst-van der Schalk, Henriette Roland |
1 |
| Lewitin, S. |
1 |
| Lipkin, Fedor A. 1868-1938 |
1 |
| Ortega y Gasset, José 1883-1955 |
1 |
| Rochow, Christian 1960- |
1 |
| Roland Holst van der Schalk, Henriette |
1 |
| Roland Holst-Van der Schalk, Henriette, 1869-1952 1869-1952 |
1 |
| Schalk |
1 |
