TY  - RPRT
TI  - Graphs showing linear to fractional scale conversions for maps
AU  - T. R. Alpha
AU  - D.W. Poole
PY  - 1979
DO  - 10.3133/mf1141
UR  - https://pubs.usgs.gov/publication/mf1141
ID  - mf1141
ER  -