TY  - RPRT
TI  - Map scale effects on estimating the number of undiscovered mineral deposits
AU  - D.A. Singer
AU  - W. D. Menzie
PY  - 2008
DO  - 10.1007/s11053-008-9068-7
UR  - https://pubs.usgs.gov/publication/70032036
ID  - 70032036
ER  -