State University. Extension Service/Sea Grant Advisory Program, O., Law, M., McKinney, 1., State Marine Board, O., Sea Grant Marine Advisory Services, W., & State Parks and Recreation Commission, W. (1995). Boating guide to the Lower Columbia and Willamette rivers. : [Salem, Or.] : Oregon State Marine Board ; [Corvallis, Or.] : Oregon State University Extension Sea Grant Program ; [Olympia, Wash.] : Washington Sea Grant Marine Advisory Program : Washington State Parks.