Export 2 results:
Filters: Author is Wilkinson, W. D.  [Clear All Filters]
1959
Wilkinson, W. D.. Field Guidebook: Geologic Trips Along Oregon Highways In Department of Geology and Mineral Industries Bulletin. Vol. 50. Oregon Department of Geology and Mineral Industries, 1959.
1946
Wilkinson, W. D., W. D. Lowry, and E. M. Baldwin. Geology of the St. Helens Quadrangle, Oregon In Department of Geology and Mineral Industries Bulletin. Vol. 31. Oregon Department of Geology and Mineral Industries, 1946.