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| Collection: | Pacific Northwest Research Station, Alaska Image Archive |
| Keywords: |
animal ecology game and fish management hunting, shooting and fishing fish management: fishing |
| Location: | Alaska; Prince of Wales Island; Maybeso Valley; Halfmile Creek |
| Description: | Fisheries Research Institute (FRI) field day. Demonstration of water movement in gravel with fluorescence dye, in Halfmile Creek. |
| Date: | 9/13/1959 |
