TY  - BOOK
AU  - Spurr,Josiah Edward
AU  - Garrey,George H.
AU  - Ball,Sydney Hobart
TI  - Economic geology of the Georgetown quadrangle (together with the Empire district) Colorado,
AV  - TN24.C6 S8 no. 63
U1  - 557.3 
PY  - 1908///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Mines and mineral resources
KW  - Colorado
KW  - Geology
N1  - Four folded plates, including 2 maps, in pocket
ER  -