TY  - RPRT
TI  - The generation of raster-format geologic maps using digital image-processing on the Macintosh computer; a tutorial guide
AU  - C.D. Condit
AU  - A.V. Acosta
PY  - 1993
DO  - 10.3133/ofr93526
UR  - https://pubs.usgs.gov/publication/ofr93526
ID  - ofr93526
ER  -