improved echo counter for low-target density surveys
By: by Forrest R. Whitt, David M. Gaudet, and Rex Johnson.
Contributors: Gaudet, David M.; Johnson, Rex.; University of Washington. Fisheries Research Institute.
Series: Circular / Fisheries Research Institute, University of Washington -- no. 81-3.; Circular (University of Washington. Fisheries Research Institute) -- no. 81-3.
Publisher: Fisheries Research Institute, College of Fisheries, University of Washington
Published: 1981
Place of publication: Seattle
Language: eng
Number of pages: 12
Subjects: Echo sounding in fishing; Fisheries -- Equipment and supplies; Fishes -- Detection; Fish populations
Notes: "April 1981."

Includes bibliographical references (leaf 12).