TY  - RPRT
TI  - NADM Conceptual Model 1.0 -- A Conceptual Model for Geologic Map Information
AU  - North American Geologic Map Data Model (NADM) Steering Committee Data Model Design Team
PY  - 2004
DO  - 10.3133/ofr20041334
UR  - https://pubs.usgs.gov/publication/ofr20041334
ID  - ofr20041334
ER  -