TY  - RPRT
TI  - GDA (Geologic Data Assistant), an ArcPad extension for geologic mapping: code, prerequisites, and instructions
AU  - Evan E. Thoms and Ralph A. Haugerud
PY  - 2006
DO  - 10.3133/ofr20061097
UR  - https://pubs.usgs.gov/publication/ofr20061097
ID  - ofr20061097
ER  -