TY  - RPRT
TI  - USGS Library/SIGCAT CD-ROM compendium
AU  - I.S. Bridgett
AU  - T.R. Miller
PY  - 1991
DO  - 10.3133/ofr9140
UR  - https://pubs.usgs.gov/publication/ofr9140
ID  - ofr9140
ER  -