TY  - BOOK
AU  - Merrill,Charles White
AU  - Henderson,Charles W.
AU  - Kiessling,O.E.
TI  - Samll-scale placer mines as a source of gold, employment, and livelihood in 1935
PY  - 1937///
CY  - Philadelphia
PB  - Works Progress Aministration
KW  - Minería
KW  - Mina
KW  - Oro
KW  - Libro
ER  -