[Washington] : U.S. Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], [1970]
Physical Details
i, 125 pages, 107 pages : illustrations, maps (part color) ; 29 cm
OCLC
ocm00116306
Cover title.
Survey made cooperatively by the Soil Conservation Service, the Pennsylvania State University Agricultural Experiment Station and Agricultural Extension Service, and the Pennsylvania State Soil and Water Conservation Commission.