Wallace, J. H. (1967). The batoid fishes of the east coast of southern Africa. Part 2: manta, eagle, duckbill, cownose, butterfly and sting rays. Investigational Report. Oceanographic Research Institute, Durban. No. 16: 1-56.
487030
Wallace, J. H.
1967
The batoid fishes of the east coast of southern Africa. Part 2: manta, eagle, duckbill, cownose, butterfly and sting rays
Investigational Report. Oceanographic Research Institute, Durban