TY  - RPRT
TI  - Aeromagnetic map of the Sassamansville quadrangle, Montgomery and Berks Counties, Pennsylvania
AU  - Randolph Wilson Bromery
AU  - G. L. Zandle
PY  - 1959
DO  - 10.3133/gp207
UR  - https://pubs.usgs.gov/publication/gp207
ID  - gp207
ER  -