Report on an acoustic survey for mackerel in the North Sea, Skagerrak and Kattegat in July - August 1987
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Original versionThis report is not to be cited without prior reference to the authors
An acoustic survey in the North Sea, Skagerrak and Kattegat was carried out in July-August 1987 by vessels from Denmark and Norway. This paper gives the distribution and the abundance estimates for mackerel.