TY  - RPRT
TI  - Aeromagnetic map of part of the Norristown quadrangle, Philadelphia, Chester, Delaware, and Montgomery Counties, Pennsylvania
AU  - Randolph Wilson Bromery
AU  - G. L. Zandle
PY  - 1959
DO  - 10.3133/gp201
UR  - https://pubs.usgs.gov/publication/gp201
ID  - gp201
ER  -