| Authors(s) | Richard, A. F. |
| Year | 1973 |
| Title | The social organization and ecology of Propithecus verreauxi. Ph. D. Thesis, London Univ. |
| Authors(s) | Richard, A. F. |
| Year | 1973 |
| Title | The social organization and ecology of Propithecus verreauxi. Ph. D. Thesis, London Univ. |