TY  - RPRT
TI  - Aeromagnetic map of the Sinking Spring quadrangle, Berks and Lancaster Counties, Pennsylvania
AU  - Randolph Wilson Bromery
AU  - G. L. Zandle
PY  - 1961
DO  - 10.3133/gp240
UR  - https://pubs.usgs.gov/publication/gp240
ID  - gp240
ER  -