TY  - RPRT
TI  - An indexing and classification system for earth-science data bases
AU  - J.C. Schornick
AU  - J. B. Pruitt
AU  - H.E. Stranathan
AU  - A.C. Duncan
PY  - 1989
DO  - 10.3133/ofr8947
UR  - https://pubs.usgs.gov/publication/ofr8947
ID  - ofr8947
ER  -