TY  - RPRT
TI  - SCRNDIGW; a Windows screen digitizing program (an image quantitating tool)
AU  - Philip S. Powers
PY  - 1994
DO  - 10.3133/ofr94697b
UR  - https://pubs.usgs.gov/publication/ofr94697B
ID  - ofr94697B
ER  -