TY  - RPRT
TI  - Presidential elections, 1972-1984; Presidential elections, 1789-1968
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
PY  - 1987
DO  - 10.3133/32550
UR  - https://pubs.usgs.gov/publication/32550
ID  - 32550
ER  -