Subject: Geology / Spatial Coverage: Allegheny County - Yale University Library GeoBlacklight Search Results

Start Over Subject Geology Spatial Coverage Allegheny County

1. Beaver folio, Pennsylvania

1905. 2013-03-14T15:33:38Z. 2013-03-14T15:33:38Z. Woolsey, Lester Hood, 1877-1961. The Survey. English. Public. Pennsylvania, Allegheny County, Beaver County, États-Unis, and arizona.

2. Brownsville-Connellsville folio, Pennsylvania

1903. 2013-03-13T20:11:35Z. 2013-03-13T20:11:35Z. Campbell, Marius R. (Marius Robinson), 1858-1940. The Survey. English. Public. Pennsylvania, Allegheny County, Fayette County, Washington County, Westmoreland County, États-Unis, and Pennsylvanie.

3. Burgettstown-Carnegie folio, Pennsylvania

1911. 2013-03-14T18:13:26Z. 2021-09-22T17:59:06Z. Shaw, E. W. (Eugene Wesley), 1881-1935. The Survey. English. Public. Pennsylvania, Allegheny County, Beaver County, and Washington County.

4. Sewickley folio, Pennsylvania

1911. 2013-03-14T18:10:52Z. 2013-03-14T18:10:52Z. Munn, M. J. (Malcolm John), 1874-1949. U.S. Geological Survey. English. Public. Pennsylvania, Allegheny County, Beaver County, and Butler County.