TY  - RPRT
TI  - A third Kevin-Sunburst map
AU  - C. E. Erdmann
AU  - J.T. Gist
AU  - J.W. Nordquist
PY  - 1947
DO  - 10.3133/ofr4719
UR  - https://pubs.usgs.gov/publication/ofr4719
ID  - ofr4719
ER  -