| Verfasser | Häufigkeit |
|---|---|
| Kruttschnitt, Candace | 5 |
| House, Carol C. | 2 |
| Gartner, Rosemary | 1 |
| Kalsbeek, William D. | 1 |
| Kalsbeek, William D. 1946- | 1 |
| National Research Council (U.S.) | 1 |
| Verfasser | Häufigkeit |
|---|---|
| Kruttschnitt, Candace | 5 |
| House, Carol C. | 2 |
| Gartner, Rosemary | 1 |
| Kalsbeek, William D. | 1 |
| Kalsbeek, William D. 1946- | 1 |
| National Research Council (U.S.) | 1 |