Blar i Fiskeridirektoratets skrifter, Serie Havundersøkelser (1900-1990) på forfatter "Røttingen, Ingolf"

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    • On the relation between echo intensity and fish density 

      Røttingen, Ingolf (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1976)
      On the relation between echo intensity and fish density. FiskDir. Skr.Ser.HavUnders., 16: 301-314. Integrated echo intensities for a wide range of fish densities were measured. The experiments were carried out on live ...