TY  - RPRT
TI  - A cost-benefit analysis of The National Map
AU  - David L. Halsing
AU  - Kevin Theissen
AU  - Richard Bernknopf
PY  - 2003
DO  - 10.3133/cir1271
UR  - https://pubs.usgs.gov/publication/cir1271
ID  - cir1271
ER  -