TY  - RPRT
TI  - Converting contour-line data into data sets for a multilayered aquifer using a geographic information system
AU  - Julia A. Rees
PY  - 1999
DO  - 10.3133/ofr9954
UR  - https://pubs.usgs.gov/publication/ofr9954
ID  - ofr9954
ER  -