TY  - RPRT
TI  - Aeromagnetic map of the Gap quadrangle, Lancaster County, Pennsylvania
AU  - Randolph Wilson Bromery
AU  - G. L. Zandle
AU  - and others
PY  - 1961
DO  - 10.3133/gp245
UR  - https://pubs.usgs.gov/publication/gp245
ID  - gp245
ER  -