1. Late Bajocian ammonites from southern Alaska Author/Creator: Imlay, Ralph W. 1908-1989, (Ralph Willard), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1982 Resource Type: Book Access & Availability: Loading
2. Late Bajocian ammonites from the Cook Inlet region, Alaska Author/Creator: Imlay, Ralph W. 1908-1989, (Ralph Willard), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1962 Resource Type: Book Access & Availability: Loading
3. Late Jurassic ammonites from Alaska Author/Creator: Imlay, Ralph W. 1908-1989, (Ralph Willard), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1981 Resource Type: Book Access & Availability: Loading
4. Late Jurassic ammonites from the western Sierra Nevada, California Author/Creator: Imlay, Ralph W. 1908-1989, (Ralph Willard), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1961 Resource Type: Book Access & Availability: Loading