TY  - RPRT
TI  - 40Ar/39Ar age-spectrum data for whole rock samples of the Martinsburg Formation, Lehigh Gap area, Pennsylvania
AU  - Michael J. Kunk
AU  - R. P. Wintsch
PY  - 1996
DO  - 10.3133/ofr9695
UR  - https://pubs.usgs.gov/publication/ofr9695
ID  - ofr9695
ER  -