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Photos courtesy of:
Polaris Applied Sciences: cov. (29), 10-14, 17, 18, 23, 24, 26-29
Inter-Fluve, Inc.: 19, 20, 41-46
NOAA: 1, 30-32, 35-40
DOT Office of Pipeline Safety: 2,3
City of Bellingham: 4-9
Walker and Associates (Seattle, WA) (copyright 1999): 21, 22, and
background photos for 32, 37-40.
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