TY - BOOK AU - Williams, A. J. AU - Petersen, S.L. AU - Goren, M. AU - Watkins, B. P. TI - Sightings of killer whales Orcinus orca from longline vessels in South African waters, and consideration of the regional conservation status KW - Orcinus orca KW - CONSERVACION KW - SUDAFRICA ER -