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Graptolite identification chart for field determination of geologic age

January 1, 1972

No abstract available.

Publication Year 1972
Title Graptolite identification chart for field determination of geologic age
DOI 10.3133/oc66
Authors Michael Churkin, Claire Carter
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Oil and Gas Investigation Chart
Series Number 66
Index ID oc66
Record Source USGS Publications Warehouse