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1. Observations on the reactions of fish to fishing gear using a towed wet submersible with underwater television [Texto fotocopiado] by J. Main and G. I. Sangster Publication: [S.l.] 1984 [s.n.] . 16 p. 23 cm Availability: Items available: Biblioteca de Algés (1),

2. A study of a multi-level bottom trawl for species separation using direct observation techniques by J. Main, G. I. Sangster Publication: Aberdeen 1982 Department of Agriculture and Fisheries for Scotland Availability: Items available: Biblioteca de Algés (1),

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