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Bodenuntersuchung aus Bohrloch. Die Bohrungen gehen weiter, bis der wasserführende Sand erreicht ist. Demonstration des sicheren Brunnens, Ridge, Saint Mary's County, Maryland
Zusammenfassung
Public domain photograph - historical image of Maryland, United States, free to use, no copyright restrictions image - Picryl description
Tags
Datum
01/01/1941
Mitwirkende
Collier, John, 1913-1992, photographer
Lage
maryland
Quelle
Library of Congress
Copyright-info
No known restrictions. For information, see U.S. Farm Security Administration/Office of War Information Black & White Photographs http://www.loc.gov/rr/print/res/071_fsab.html
