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    • SISP 10 - Manual for the International Bottom Trawl Surveys. Revision 11. 

      International Council for the Exploration of the Sea (ICES); International Bottom Trawl Survey Working Group (International Council for the Exploration of the Sea (ICES), Copenhagen, Denmark, 2020)
      Series of ICES Survey Protocols SISP - IBTS X | 1 1 Introduction Overview of the survey The International Bottom Trawl Survey (IBTS) in the North Sea has been conducted in the 1st quarter of the year since the beginning ...