Context

Context of Geologic map of quadrangles 3764 and 3664, Jalajin (117), Kham-Ab (118), Char Shangho (123), and Sheberghan (124) quadrangles, Afghanistan, compiled by Ronald R. Wahl ; U.S. Department of the Interior, U.S. Geological Survey ; prepared in cooperation with the Afghan Geological Survey ... [et al.], (electronic resource)
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