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81

Geologic interpretation of aeromagnetic map Morgantown Quadrangle /

by Socolow, Arthur A.
Harrisburg, Pa. : Pennsylvania Topographic and Geologic Survey, 1961

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Government Document Book

82

Emma McKnight no. 1 well, Pymatuning Township, Mercer County /

by Wagner, Walter Richard, 1928-1974
[Harrisburg, Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1958

Government Document Book

83

Stratigraphy of the Lower Ordovician Axemann Limestone of central Pennsylvania,

by Lees, John A.
Harrisburg, [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey] 1967

Book

84

Geology of a barite occurrence, Fulton County, Pennsylvania /

by Socolow, Arthur A.
Harrisburg, Pa. : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey, 1959

Book

85

Geologic conditions affecting safe bituminous coal mining in Pennsylvania : selected papers /

Harrisburg, Pa. : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1979

Book

86

Preliminary report, geology and mineral resources of the New Florence quadrangle, Pennsylvania /

by Shaffner, Marchant N. (Marchant Nissley), 1897-
[Harrisburg] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1951

Book

87

Oil and gas developments in Pennsylvania in 1991 /

by Cozart, Cheryl L.
Harrisburg : Commonwealth of Pennsylvania, Department of Environmental Resources, Office of Parks and Forestry, Bureau of Topographic and Geologic Survey, 1993

Government Document Book

88

Geologic interpretation of aeromagnetic maps, Pottstown, Wagontown, Downingtown, Coatesville, Unionville, Honeybrook, & Parkesburg quadrangles,

by Socolow, Arthur A.
[Harrisburg] Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1960

Book

89

Geology and mineral resources of Bucks County, Pennsylvania.

[Harrisburg, Pa. Commonwealth of Pennsylvania] Dept. of Internal Affairs, Topographic and Geologic Survey. 1959

Book

90

Lithostratigraphy of the Middle Ordovician Salona and Coburn formations in central Pennsylvania.

by Thompson, Richard Rogers
Harrisburg, [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey] 1963

Book

91

Stratigraphy of the Cambrian to Middle Ordovician rocks of central and western Pennsylvania,

by Wagner, Walter Richard, 1928-1974
Harrisburg [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey] 1966

Book

92

Brookville quadrangle : geology and mineral resources /

by Graeber, Charles Karsner, 1896-
Harrisburg, PA. : Dept. of Internal Affairs, Topographic and Geologic Survey, 1942

Book

93

46th Annual Field Conference of Pennsylvania Geologists.

Harrisburg : Bureau of Topographic and Geologic Survey, 1981

Conference Proceeding Book

94

Geologic structures of the northern plateaus region of Pennsylvania /

by Ingham, A. I. (Albert Irwin), 1914-2002
[Harrisburg] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey 1951

Book

95

Geology and mineral resources of the northern half of the New Bloomfield quadrangle,

by Dyson, James L. (James Lindsay), 1912-1967
Harrisburg [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey] 1963

Book

96

Elevations in Pennsylvania /

[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1964

Book

97

Bedrock geology and mineral resources of the Linden and Williamsport quadrangles, Lycoming County, Pennsylvania /

by Faill, Rodger T.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1977

Book

98

Geology and mineral resources of the Salladasburg and Cogan Station quadrangles, Lycoming County, Pennsylvania /

by Faill, Rodger T.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Bureau of Topographic and Geologic Survey, 1977

Book

99

A lithostratigraphic, petrographic and chemical investigation of the Lower Middle Ordovician carbonate rocks in central Pennsylvania, by Morris Rones .

by Rones, Morris, 1922-1965
Harrisburg [Commonwealth of Pennsylvania, State Planning Board, Bureau of Topographic and Geologic Survey] 1969

Book

100

Elevations in Pennsylvania /

by Sangree, Anne C.
[Harrisburg : Commonwealth of Pennsylvania, Dept. of Internal Affairs, Bureau of Topographic and Geologic Survey, 1954

Book

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