Soil survey, Montgomery County, Pennsylvania. [Report - Smith, Robert V., 1928-; United States. Soil Conservation Service (Washington] U.S. Dept. of Agriculture, Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.], 1967)
Cover title.
Bibliography: p. 185-186.
Keywords: Soil surveys -- Pennsylvania -- Montgomery County