tag:digital.library.illinois.edu,2005:/itemsItems2022-07-20T21:19:58Ztag:digital.library.illinois.edu,2005:Item/2946702020-03-09T19:14:08Z2022-07-20T21:19:58Z[Maps from] Field operations of the Bureau of Soils, 1910. Twelfth report.Field operations of the Bureau of Soils, 1910 also issued as: U.S. Congressional Serial Set, vol. 6031. Accompanying map portfolio also issued as: U.S. Congressional Serial Set, vol. 6032.University of Illinois at Urbana-Champaign Library