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12. Isopleth maps of uranium, thorium, cerium, lanthanum, and related elements in stream sediments of West Virginia
13. Geologic map of the Montara Mountain and San Mateo 7-1/2ʹ quadrangles, San Mateo County, California
14. Quaternary geologic map of the Ottawa 4° x 6° quadrangle, United States and Canada
15. Geologic maps of upper Cenozoic deposits in central California
16. Geologic map of upper Eocene to Holocene volcanic and related rocks in the Cascade Range, Washington
17. Geologic map of the Palo Alto and part of the Redwood Point 7-1/2ʹ quadrangles, San Mateo and Santa Clara counties, California
18. Quaternary geologic map of the Hudson River 4° x 6° quadrangle, United States and Canada
19. Bedrock geologic map of the Gloucester and Rockport quadrangles, Essex County, Massachusetts
20. Quaternary geologic map of the Boston 4° x 6° quadrangle, United States and Canada
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