TY  - RPRT
TI  - Aeromagnetic map of the Wilmington, Delaware area and adjacent parts of Pennsylvania and Maryland
AU  - J. R. Henderson
AU  - R.W. Johnson
AU  - F. P. Gilbert
PY  - 1963
DO  - 10.3133/gp363
UR  - https://pubs.usgs.gov/publication/gp363
ID  - gp363
ER  -