Behaviour and sound signals of cetaceans / by A.G. Tomlin. Characteristics of the development of cetaceans at early embryonic stages / by M.M. Sleptsov. The biology of Cephalopoda of the far-eastern seas and the north-western part of the Pacific / by M.M. Sleptsov. The food of the sperm whale (Physeter catodon L.) in the region of the Kuril Islands / by E.I. Betesheva and I.I. Akimushkin. The propagation cycle of the sperm whale / by E.S. Chuzhakina. Body proportions of the sperm whale (Physeter catodon L.) / by E.I. Ivanova.
