TY  - BOOK
AU  - Rehm, George W.,
TI  - Impact of "ACA" on crop yield in the North Central region
U1  - 631.8 
PY  - 1999///
CY  - St. Paul, Minnesota
PB  - University of Minnesota.Minnesota Agricultu al Experiment Station
KW  - Crop yields
KW  - Fertilizers
N1  - Minnesota Agricultual Experiment Station Bulletin; Produced by North Central Region's NCR-103 committee; Includes bibliographical references
ER  -