TY  - RPRT
TI  - Aeromagnetic map of western Pennsylvania and parts of eastern Ohio, northern West Virginia, and western Maryland
AU  - Peter Popenoe
AU  - A. J. Petty
AU  - N.S. Tyson
PY  - 1964
DO  - 10.3133/gp445
UR  - https://pubs.usgs.gov/publication/gp445
ID  - gp445
ER  -