Conservation tillage (including minimum and no tillage), June 1985-March 1987 :
441 citations /
prepared by Jayne T. Maclean.
|Main Author:||MacLean, Jayne T.|
Beltsville, Md. : U.S. Dept. of Agriculture, National Agricultural Library, 
Conservation tillage > Bibliography.
Shipping list no.: 87-399-P.
"Updates QB. 86-43."
"Database searched: AGRICOLA."
42 p. ;
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