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1by Fettke, Charles R. (Charles Reinhard), 1888-1959“...Bureau of Topographic and Geologic Survey,...”
Published 1953
Book -
2
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3Published 1972“...Bureau of Topographic and Geologic Survey],...”
Book -
4
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5
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6by Markowski, Antonette K., 1956-“...Bureau of Topographic and Geologic Survey,...”
Published 2001
Government Document Book -
7“...Pennsylvania, Bureau of Topographic and Geologic Survey,...”
Internet Archive, State Library of Pennsylvania
Government Document Book -
8by Geyer, Alan R.“...Pennsylvania Bureau of Topographic and Geologic Survey,...”
Published 1982
Book -
9by Barnes, John Henry, 1946-“...Pennsylvania, Bureau of Topographic and Geologic Survey,...”
Published 1991
Government Document Book -
10Published 1971“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Book -
11by Heyman, Louis“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Published 1969
Book -
12Published 1970“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Conference Proceeding Book -
13by McGlade, William G.“...[Commonwealth of Pennsylvania, Bureau of Topographic & Geologic Survey],...”
Published 1972
Book -
14by Hollowell, Jerrald R.“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Published 1971
Book -
15by Meisler, Harold“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Published 1971
Book -
16by Newport, Thomas Gwyn, 1922-“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Published 1973
Book -
17by Fauth, John L.“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Published 1968
Book -
18by Glover, Albert D.“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Published 1970
Book -
19by Root, Samuel I.“...[Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey],...”
Published 1968
Book -
20by Geyer, Alan R.“...[Commonwealth of Pennsylvania, Bureau of Topographic & Geologic Survey],...”
Published 1970
Book