Atlas of american agriculture
Marbut, Curtis F
Atlas of american agriculture - Washington, D.C : Government Printing Office, 1935. - 97 p. ; 16 cm.
Part 3: Soils of the United State
Atlas of american agriculture - Washington, D.C : Government Printing Office, 1935. - 97 p. ; 16 cm.
Part 3: Soils of the United State