Canlyniadau Chwilio - "Echo."

Echo survey of Northwestern Palawan waters gan Aprieto, Virginia L.

Livescribe unleashes new Echo smartpen.

Finding fish with echo-sounders.

Developments in fisheries acoustics a symposium held in Seattle, 22-26 June 1987 gan Symposium on Developments in Fisheries Acoustics (1987 : Seattle)

Echo gan Pinchevski, Amit

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Fisheries accoustics a practical manual for aquatic biomass estimation gan Johannesson, K. A.

Underwater observation using sonar gan Tucker, D. G. (David Gorda)

Fisheries sonar (incorporating underwater observation using sonar gan Mitson, R. B.

The detection of fish gan Cushing, D. H.

Underwater observation using sonar gan Tucker, D. G. (David Gorda)