Preliminary geologic map of the Capulin quadrangle, Alamosa and Conejos counties, Colorado [microform] / U.S. Department of the Interior, U.S. Geological Survey ; by Ralph R. Shoba and Ren A. Thompson (Open-file report ; no. 96-717)
Preliminary geologic map of the Capulin quadrangle, Alamosa and Conejos counties, Colorado [microform] / U.S. Department of the Interior, U.S. Geological Survey ; by Ralph R. Shoba and Ren A. Thompson