Geologic map of the Yabucoa and Punta Tuna quadrangles, Puerto Rico
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Puerto Rico, Yabucoa and Punta Tuna quadrangles
Puerto Rico, Yabucoa and Punta Tuna quadrangles: explore 1 source-linked works published from 1977 to 1977, with original documents and citations.
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Includes records with this source-supplied label or an explicit phrase match in their metadata. Matches indicate a mention, not proof that a paper uses a method or tests a material. Source versions are consolidated by DOI.
Sources: usgs. Collection updated 2026-09-19. Counts describe this index, not the complete source archives.