TY  - RPRT
TI  - Volunteer map data collection at the USGS
AU  - B. Wolf Eric
AU  - Barbara S. Poore
AU  - Holly K. Caro
AU  - Greg D. Matthews
PY  - 2011
DO  - 10.3133/fs20113103
UR  - https://pubs.usgs.gov/publication/fs20113103
ID  - fs20113103
ER  -