Medium range omnidirectional multibeam sonar observation of fish schools around drifting FADs Proceedings of the eighth european conference on underwater acoustics /Brehmer, Patrice Georgakarakos, S. Trygonis, V. /Josse, Erwan THON ETHOLOGIE DISPOSITIF DE CONCENTRATION DES POISSONS PROSPECTION ACOUSTIQUE SONAR EXPERIMENTATION COLLECTE DE DONNEES Ecua Jesus, S.M. (ed.) Rodriguez, O.C. (ed.) 2006 text https://www.documentation.ird.fr/hor/fdi:010046822 fdi:010046822 Brehmer Patrice, Georgakarakos S., Trygonis V., Josse Erwan. Medium range omnidirectional multibeam sonar observation of fish schools around drifting FADs. In : Jesus S.M. (ed.), Rodriguez O.C. (ed.), . Proceedings of the eighth european conference on underwater acoustics Ecua, 2006, 4 European Conference on Underwater Acoustics, 8., Carvoeiro (PRT), 2006/06/12-15 EN