Contour map showing altitude of bedrock surface in southern Philadelphia, Pennsylvania
Open-File Report
50-73
By: J.B. Graham
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Abstract
Suggested Citation
Graham, J., 1950, Contour map showing altitude of bedrock surface in southern Philadelphia, Pennsylvania: U.S. Geological Survey Open-File Report 50-73, 1 map, https://doi.org/10.3133/ofr5073.
ISSN: 2331-1258 (online)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Contour map showing altitude of bedrock surface in southern Philadelphia, Pennsylvania |
| Series title | Open-File Report |
| Series number | 50-73 |
| DOI | 10.3133/ofr5073 |
| Year Published | 1950 |
| Language | ENGLISH |
| Description | 1 map |