TY  - RPRT
TI  - Clear mylar templates used to measure latitude and longitude of sample localities at scales of 1:63,360 and 1:250,000 between the latitudes of 49 degrees and 71 degrees 30 minutes north or south
AU  - W. L. Campbell
AU  - George VanTrump
PY  - 1982
DO  - 10.3133/ofr82724
UR  - https://pubs.usgs.gov/publication/ofr82724
ID  - ofr82724
ER  -