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 | Economies of size of Illinois cash-grain & hog farms / by Roy N. Van Arsdall and William A. Elder. Van Arsdall, Roy Neuman, 1924- 2n Urbana, Ill. : University of Illinois, College of Agriculture, Agricultural Experiment Station, 1969. | |
| School tax options affecting Illinois agriculture / . Urbana, Ill. : University of Illinois at Urbana-Champaign, College of Agriculture, Agricultural Experiment Station, 1973. | |
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