Canlyniadau Chwilio

1

gan Willard, Bradford, 1894-1973
Harrisburg [Pa.] : Pennsylvania, Bureau of Topographic and Geologic Survey, 1976

Government Document Llyfr

2

gan Ashley, Geo. H. (George Hall), 1866-1951
Harrisburg [Pa.] : Pennsylvania. Bureau of Topographic and Geologic Survey, 1922
2nd ed.

Government Document Llyfr

3

Coal reserves in Jefferson County, Pennsylvania /

gan Sisler, James D. (James Donaldson), 1894-
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geological Survey, 1924

Government Document Llyfr

4

Raymond B. Winter State Park, Union County : scenery, rocks, and springs in eastern Brush Valley /

[Harrisburg] : The Bureau, 1984

Government Document Llyfr

5

Geology of the Richland quadrangle,

gan Gray, Carlyle
Harrisburg, [Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1958

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.

Llyfr

6

Geology and mineral resources of the Punxsutawney quadrangle, Pennsylvania /

gan Ashley, Geo. H. (George Hall), 1866-1951
Harrisburg : Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey, 1969

Government Document Llyfr

7

Bulletin ...

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.

Cylchgrawn

8

Geologic interpretation of aeromagnetic map Sassamansville Quadrangle /

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

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.

Government Document Llyfr

9

Geology and mineral resources of the Sinking Spring quadrangle, Berks and Lancaster counties, Pennsylvania /

gan MacLachlan, David B.
Harrisburg [Pa.] : Pennsylvania Bureau of Topographic and Geologic Survey, 1975

Government Document Llyfr

10

Geology of Tioga and Bradford Counties, Pennsylvania.

Harrisburg : Bureau of Topographic and Geologic Survey, 1981

Conference Proceeding Llyfr

11

Coal beds in Armstrong County, Pennsylvania /

gan Sisler, James D. (James Donaldson), 1894-
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922

Llyfr

12

Pennsylvania geology summarized /

gan Willard, Bradford, 1894-
[Harrisburg] : Commonwealth of Pennsylvania, Department of Internal Affairs, Bureau of Topographic and Geologic Survey, 1956
Third edition, revised.

Llyfr

13

Geology of oil and gas in relation to coal /

gan Ashley, Geo. H. (George Hall), 1866-1951
[Harrisburg] : Bureau of Topographic and Geological Survey, 1920

Llyfr

14

Topographic and geological survey of Pennsylvania : 1910-1912.

Harrisburg : [publisher not identified], 1912

Llyfr

15

Glacial geology of northwestern Pennsylvania /

gan Shepps, Vincent C. (Vincent Chester), 1928-
[Harrisburg, PA] : Dept. of Internal Affairs, Topographic and Geologic Survey, 1959

Government Document Llyfr

16

Geology and mineral resources of Pike County, Pennsylvania /

Harrisburg, Pa. : Commonwealth of Pennsylvania, [Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey], 1989

Government Document Llyfr

17

Future use of raw coal /

gan Ashley, Geo. H. (George Hall), 1866-1951
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922
Rev. May 25, 1922.

Llyfr

18

Coal reserves in Fayette County, Pennsylvania /

gan Reese, John F.
[Harrisburg] : Bureau of Topographic and Geological Survey, 1922

Llyfr

19

Promised Land State Park, Pike County : ancient rivers and ages of ice /

[Harrisburg] : The Bureau, 1984

Government Document Llyfr

20

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

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

This item is not available through EZBorrow. Please contact your institution’s interlibrary loan office for further assistance.

Llyfr

Manylu'r Chwiliad