Soil survey of Bucks and Philadelphia Counties, Pennsylvania /

by Tompkins, Edward A.
[Washington] : [U.S. Govt. Print. Off.], 1975

Soil survey, Mercer County Pennsylvania /

by Grice, Darrell Gene, 1930-, Grubb, Robert G., Jaquish, Orin Willis, 1924-
[Washington] : Soil Conservation Service : For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1971

Soil survey of Huntingdon County, Pennsylvania /

by Merkel, Edward J.
[Washington] : National Cooperative Soil Survey, 1978

Soil survey of Greene and Washington Counties, Pennsylvania /

[Washington, D.C.] : The Service, 1983

Soil survey, Dauphin County, Pennsylvania

by Kunkle, W. Merrill, 1904-1986, Lipscomb, Garland H., Kinnard, Richmond
Washington] U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1972

Soil survey of Tioga County, Pennsylvania /

by Rayburn, James Boyd, 1909-
[Washington, D.C.?] : The Service, 1981

Soil survey of Franklin County, Pennsylvania /

by Long, Richard Stokes, 1909-
[Washington] : The Service, 1975

Soil survey of Allegheny County, Pennsylvania.

[Washington, D.C.?] : U.S. Dept. of Agriculture, Soil Conservation Service, 1981

Soil survey of Warren and Forest Counties, Pennsylvania /

by Cerutti, James R.
[Washington, D.C.?] : The Service, 1985

Soil survey of Snyder County, Pennsylvania /

by Eckenrode, Joseph J.
[Washington, D.C.?] : The Service, 1985

Soil survey, Pike County, Pennsylvania

by Taylor, David Clarence, 1910-
Washington] U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1969

Soil survey of Crawford County, Pennsylvania /

[Washington, D.C.] : National Cooperative Soil Survey, 1979

Soil survey of Armstrong County, Pennsylvania /

by Martin, George D.
[Washington] : The Service, 1977

Soil survey of Lebanon County, Pennsylvania.

by Holzer, Donald B.
[Washington, D.C.?] : U.S. Dept. of Agriculture, Soil Conservation Service, 1981

Soil survey of Centre County, Pennsylvania.

by Braker, William L.
[Washington, D.C.?] : U.S. Dept. of Agriculture, Soil Conservation Service, 1981

Soil survey of Cameron and Elk counties, Pennsylvania /

by Kopas, Frank A.
[Washington, D.C.] : The Service, 1993

Soil survey of York County, Pennsylvania /

by Smith, Robert V., 1928-
[Washington, D.C.?] : The Service, 2002

Soil survey of Luzerne County, Pennsylvania.

by Bush, R. Dennis
[Washington, D.C.?] : U.S. Dept. of Agriculture, Soil Conservation Service, 1981