Conservation farming int he United States : the methods and accomplishments of the STEEP program - Michalson, Edgar L. , ed.; Carlson, John E.; Papendick, Robert I. (Boca Raton, Flo. : CRC Press, 1999)
BATCH-UPD
BATCH-UPD
BATCH-UPD
CONVERSION
Keywords: Agricultura -- E.U.A.; Agricultura -- Investigacion -- E.U.A.; Cultivos -- E.U.A.