TY  - BOOK
AU  - Singewald,Quentin D.
TI  - Geology and ore deposits of the upper Blue River area, Summit County, Colorado
AV  - QE75 .B9 no. 970
U1  - 557.88 
PY  - 1951///
CY  - Washington, [D.C.]
PB  - U.S. G.P.O.
KW  - Geology
KW  - Colorado
KW  - Summit County
KW  - Ore deposits
KW  - Mines and mineral resources
N1  - Seven folded leaves in pocket; Prepared in cooperation with the Colorado Geological Survey Board and the Colorado Metal Mining Fund; Bibliography: p. 72
ER  -