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Über den Zahnwechsel bei Selachiern. Revue Suisse de Zoologie, 54(19), 305–367
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A preliminary investigation of the feeding ecology of skates (Batoidea: Rajidae) off the west coast of southern Africa. South African Journal of Marine Science, 10(1), 71–81
DOI: 10.2989/02577619109504621
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The feeding ecology of skates (Batoidea: Rajidae) off the cape south coast, South Africa. South African Journal of Marine Science, 12(1), 823–834
DOI: 10.2989/02577619209504744