Genera des serpents du Congo et du Ruanda-Urundi.

Tervuren: Musee Royal de l'Afrique Centrale, 1962. Octavo, 15 photographic plates, text illustrations. Modern binder's cloth, wrappers retained, a fine copy.
.
Tervuren: Musee Royal de l'Afrique Centrale, 1962. Octavo, 15 photographic plates, text illustrations. Modern binder's cloth, wrappers retained, a fine copy.
.