Survey report for the 1997 aerial surveys for harbor porpoise and other marine mammals of Oregon, Washington, and British Columbia outside waters

Citation:

Laake, J., J. Calambokidis, and S. Osmek. 1998. Survey report for the 1997 aerial surveys for harbor porpoise and other marine mammals of Oregon, Washington and British Columbia outside waters. Pages 77-97 in Marine Mammal Protection Act and Endangered Species Act Implementation Program 1997. AFSC Processed Report 98-10. National Marine Fisheries Service, Seattle, WA.