TY  - RPRT
TI  - Tin-bearing placers near Guadalcazar, State of San Luis Potosi, Mexico
AU  - Carl Fries
AU  - Eduardo Schmitter
PY  - 1948
DO  - 10.3133/b960d
UR  - https://pubs.usgs.gov/publication/b960D
ID  - b960D
ER  -