Title: A review of the cobras of the Naja nigricollis complex in southwestern Africa (Serpentes, Elapidae)
First published: 1974
Subjects: Cobras, Classification, Variation, Naja nigricollis
Places: Namibia
LC classification: QL337.N27 C56 vol. 2, no. 14, QL666.O64 C56 vol. 2, no. 14