TY  - RPRT
TI  - Reports and maps of the Geological Survey released only in the open files, 1963
AU  - Betsy A. Weld
AU  - Margaret S. Griffin
AU  - George W. Brett
PY  - 1964
DO  - 10.3133/cir488
UR  - https://pubs.usgs.gov/publication/cir488
ID  - cir488
ER  -