Crop residue management to reduce erosion and improve soil quality : northern Great Plains /

[Washington, D.C.?] : Springfield, VA : U.S. Dept. of Agriculture, Agricultural Research Service ; National Technical Information Service [distributor], 1994

Crop residue management to reduce erosion and improve soil quality : southern Great Plains /

[Washington, D.C.?] : Springfield, VA : U.S. Dept. of Agriculture, Agricultural Research Service ; National Technical Information Service [distributor], 1994