TY  - RPRT
TI  - A user's manual for a method of map scanning and digital editing for thematic map production and data-base construction
AU  - D. R. Soller
AU  - W.R. Stettner
AU  - K.J. Lanfear
AU  - D. S. Aitken
PY  - 1990
DO  - 10.3133/cir1054
UR  - https://pubs.usgs.gov/publication/cir1054
ID  - cir1054
ER  -