Population estimates of northern squawfish, Ptychocheilus oregonensis, at Bonneville Dam First Powerhouse, Columbia River
By: Michael H. Gessel ... [et al.]
Contributors: Gessel, Michael H.; Northwest Fisheries Science Center (U.S.)
Series: NOAA technical memorandum NMFS-NWFSC -- 18.
Publisher: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center; Available [from the] National Technical Information Service
Published: 1994
Place of publication: Seattle, WA; Springfield, VA
Language: eng
Number of pages: 21
Subjects: Fish populations -- Columbia River.; Ptychocheilus oregonensis -- Bonneville Dam (Or. and Wash.); Ptychocheilus oregonensis -- Columbia River.
Notes: "December 1994."

Includes bibliographical references (p. 18-21).

Also availble on the World Wide Web.