Seleksjonsforsøk med torskeruser
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- Fisken og havet (1958- ) 
The selection of cod in trap-nets made of cotton has been studied on the fishing localities and in an aquarium. Most of the calculations are made on data from aquarium experiments with five different mesh-sizes. The selection ranges were 2-5 cm, and the mean selection factor calculated from the mesh-size and the length in the middle of the selection range was 4,1.