The Library of Congress has cataloged this publication 

 as follows: 



Gangmark, Harold A 



Plastic atiiiulpipe for sampling streambed environment of 

 salmon spawn, by Harold A. Gangmark and Richard G. 

 Bakkala. A^'ashington, U. S. Dept. of the Interior, Fish and 

 Wildlife Service, 1958. 



20 p. illus. 27 cm. ( U. S. Fish and Wildlife Service. Special 

 scientific report : fislieries, no. 261) 



Bibliograpiiy : p. 19-20. 



1. Salmon. i. Bakltala, Richard G., joint author, ii. Title. 

 (Series) 



SH11.A335 110.261 597.5 59-60426 



Library of Congress 



The Fish and Wildlife Service series, Special Scientific 

 Report — Fisheries, is cataloged as follows: 



U. S. Fish and Wildlife Service. 



Special scientific report : fisheries, no. 1- 

 iWashingtoH] 1949- 



no. illus., maps, diagrs. 27 cm. 



Supersedes in part the Service's Special scientific report. 



1. Fisheries — Research. 

 SH11.A335 639.2072 59-60217 



Library of Congress t2i 



