TY  - BOOK
AU  - Frazier, Samuel Milligan,
TI  - Secrets of the rocks: Or, the story of the hills and the gulches 
AV  - TN147 F73 1907
PY  - 1907///
CY  - Denver, colorado
PB  - Hall % williams
KW  - Prospección
KW  - Geología económica
KW  - Minas y riquezas minerales
N1  - Subtitutlo : showing where and how to search for gold and silver mines, and how to make simple, general and special tests for minerals and metals. comprising and appendix describing in brief the common rock constituents and metallic; ores
ER  -