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Serial check-in : texto impreso
Fishery Investigations, 1956 Series II. vol. XX n° 5 - Variada - On the fishing efflort in english demersal fisheries
J.A. Gulland, Autor | 1956Dead fish were hung in their swimming positions from netting stretched across a frame, which in its turn was suspended beneath an echo sounder. Observations were made on different numbers of cod, herring, and 110 c.c. air bladders at different d[...]