||Normative document (norm, referencial, protocol)
||ICES CM 1999/D:2. Addendum 2. Ref.: G
||ICES - International Council for the Exploration of the Sea
||The International Bottom Trawl Survey Working Group, formerly known as the International Young Fish Survey Working Group, has the responsibility of coordinating various research vessel surveys conducted within certain ICES areas. The first survey to be coordinated was the International Young Fish Survey (IYFS) that was conducted in the North Sea and Skagerrak/Kattegat in February of each year starting in the late 1960's. A procedural manual was produced for the use of scientists involved in this survey and subsequently two revised editions were produced as international co-operation developed. In 1991 this co-operative programme was expanded to include the three other quarters in the North Sea and Skagerrak/Kattegat. This necessitated major alterations to the manual and the revised edition was published as ICES CM 1992/H:3. ...