%0 Map %0 U.S. Federal Government Document %0 Print %E Geological Survey (U.S.) %E Johnson, Ronald C. (Ronald Carl), 1950- %E Smith, Marjorie C. %I The Survey ; For sale by Map Distribution %D 1993 %C Reston, VA : Denver, CO %G English %B Miscellaneous field studies %T Geologic map of the Philadelphia Creek quadrangle, Rio Blanco County, Colorado