Search Results

1

Pennsylvania geology summarized /

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

Government Document Book

2

Geology and mineral resources of Bucks County, Pennsylvania.

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

Book

3

Geology and mineral resources of Bucks County, Pennsylvania.

Harrisburg, Pa. : Pennsylvania Department of Property and Supplies, 1959

Government Document Book

4

Pennsylvania geology summarized /

[Harrisburg, Pa.] : [Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey], 1962

Government Document Book

5

Guide to the highway geology from Harrisburg to Bald Eagle Mountain /

by Willard, Bradford, 1894-1973
Harrisburg, PA. : Pennsylvania Bureau of Topographic and Geological Survey, 1958

Government Document Book

6

Guidebook to the geology near Reading, Pa. /

by Willard, Bradford, 1894-1973, Fraser, Donald McCoy, 1903-
Harrisburg, Pa. : Pennsylvania Dept. of Internal Affairs, Topographic and Geologic Survey, 1939

Government Document Book

7

The Devonian of Pennsylvania : Middle and Upper Devonian /

Harrisburg, Pa. : Department of Internal Affairs, Topographic and Geologic Survey, 1939

Book

8

Geology and mineral resources of Bucks County, Pennsylvania.

[Harrisburg], [publisher not identified], 1959

Book

9

Geologic papers. : [A Paleozoic section in south central Penna.] /

[Harrisburg, Pa.] : [Dept. of Internal Affairs, Topographic and Geologic Survey], 1938

Book

10

Geology and mineral resources of Bucks County, Pennsylvania.

[Harrisburg] 1959

Government Document Book

11

The Devonian of Pennsylvania : Middle and upper Devonian /

Harrisburg, Pa. : Dept. of internatl affairs, Topographic and geologic survey, 1939

Book

12

Guide to the highway geology from Harrisburg to Bald Eagle Mountain /

by Willard, Bradford, 1894-1973
Harrisburg, PA. : Pennsylvania Bureau of Topographic and Geological Survey, 1958

Government Document Book

13

Geology and mineral resources of Bucks County, Pennsylvania.

Harrisburg, Pa. : Pennsylvania Dept. of Property and Supplies, 1959

Government Document Book

Narrow Search