TY  - RPRT
TI  - Mineral deposit models; theory and practice
AU  - Steve Ludington
AU  - Paul B. Barton
AU  - Kathleen M. Johnson
PY  - 1985
DO  - 10.3133/ofr85391
UR  - https://pubs.usgs.gov/publication/ofr85391
ID  - ofr85391
ER  -