Illinois agricultural economics / Department of Agricultural Economics, University of Illinois, Agricultural Experiment Station.

v.1:2(July 1961); v.1:1(Jan 1961); v.1, no.1 (1961: Jan); v.1, no.2 (1962: July); v.2:2(July 1962); v.2:1(Jan 1962); v.2, no.1 (1962: Jan); v.2, no.2 (1962: July); v.3, no.0. 2 (1963: July); v.3:2(July 1963); v.3:1(Jan 1963); v.3, no.1 (1963: Jan); v.4:3(Dec 1964); v.4:1(Jan 1964); v.4, no.1 (1964: Jan); v.4, no.2 (1964: July); v.4, no.3 (1964: Dec); v.13:1; v.13:2; v.14:1; v.14:2; v.15:1; v.15:2; v.16:1; v.16:2; v.17:1; v.17:2; v.18:1; v.18:2