[Report Smith, Robert V. 1928- creator United States Soil Conservation Service. text bibliography xx Washington] U.S. Dept. of Agriculture, Soil Conservation Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] 1967 monographic eng

print

i, 187 p. illus., maps (part fold. col.) 28 cm. by Robert V. Smith. Cover title. Bibliography: p. 185-186. Soil surveys Pennsylvania Montgomery County S599.P4 S6 631.4/7/74812 agr67000243 DLC 760712 20260227111026.0 agr67000243