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Kirkman, S. P., D. P. Costa, A.-L Harrison, P. G. H. Kotze, W. H. Oosthuizen, M. Weise, J. A. Botha, ja J. P. Y. Arnould. "Dive Behaviour and Foraging Effort of Female Cape Fur Seals Arctocephalus Pusillus Pusillus." R Soc Open Sci 2019.

Kirkman, S. P., et al. "Dive Behaviour and Foraging Effort of Female Cape Fur Seals Arctocephalus Pusillus Pusillus." R Soc Open Sci 2019.