Washington (State). Division of Geology and Earth Resources, Association of Engineering Geologists. Washington State Section, & Galster, R. W. (1989). Engineering geology in Washington. Washington State Dept. of Natural Resources, Division of Geology and Earth Resources.
Cita Chicago Style (17a ed.)Washington (State). Division of Geology and Earth Resources, Association of Engineering Geologists. Washington State Section, y Richard W. Galster. Engineering Geology in Washington. [Olympia, WA] (Mail Stop PY-12, Olympia 98504): Washington State Dept. of Natural Resources, Division of Geology and Earth Resources, 1989.
Cita MLA (8a ed.)Washington (State). Division of Geology and Earth Resources, et al. Engineering Geology in Washington. Washington State Dept. of Natural Resources, Division of Geology and Earth Resources, 1989.