United States.Forest Service.Southwestern Region
Forest Service, Southwestern Region; for sale by the Supt. of Docs., U.S. Print. Off., Washington
1972 [i.e. 1974]
293 p. illus. 24 cm.
for sale by the Supt. of Docs., U.S. Govt. Print. Off
iv, 198 p. : ill., maps (5 fold. in pocket) ; 28 cm.