TY  - RPRT
TI  - Aeromagnetic map of part of the Unionville quadrangle, Chester County, Pennsylvania
AU  - Randolph Wilson Bromery
AU  - G. L. Zandle
PY  - 1960
DO  - 10.3133/gp226
UR  - https://pubs.usgs.gov/publication/gp226
ID  - gp226
ER  -