| Authors(s) | Hick, U. |
| Year | 1976 |
| Title | The first year in the new lemur house at the Cologne Zoo. International Zoo Yearbook 16: 141-145. |
| Authors(s) | Hick, U. |
| Year | 1976 |
| Title | The first year in the new lemur house at the Cologne Zoo. International Zoo Yearbook 16: 141-145. |