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Aquatic Mammals, Volume 10(3), 69-70
Whither dominant frequency in Tursiops?
Author: Kamminga, C.

Aquatic Mammals, Volume 10(3), 71-78
Variability of harbour seal numbers on haul-out sites
Author: Terhune, J. M.hives

Aquatic Mammals, Volume 10(3), 79-82
A comparative study of the morphology and the topography of the heart of the Arctocephalus australis (fur or ursine seal) and of the heart of the Phoca vitulina vitulina (common or harbour seal) in their relation to the type of locomotion
Author: van Nie, C. J.

Aquatic Mammals, Volume 10(3), 83-94
Investigations on Cetacean Sonar VI. Sonar  sounds in Orcaella brevirostris of the Makaham River, East Kalimantan, Indonesia; First description of acoustic behaviour
Authors: Kamminga, C., Wiersma, H., & Dudok van Heel, W. H.

Aquatic Mammals, Volume 10(3), 95-105
Observations on the captive behaviour of Sotalia fluviatilis guianensis
Author: Terry, R. P.

Aquatic Mammals, Volume 10(3), 106-108
Is the blind river dolphin sightless?
Author: Waller, G. N. H.