Geologic map of the Bucaramanga Quadrangle H-12, Colombia
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IMAP↗
Geology topics
D.E. Ward
Publications and source records attributed to D.E. Ward.
Geologic map of the Pamplona Quadrangle (H-13), Columbia
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IMAP↗
Geologic map of parts of the San Gil and Malaga quadrangles (I-12 and I-13), Colombia
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IMAP↗
Summary of mineral resources in four selected areas of Colombia
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Open-File Report↗