World economic conditions in relation to agricultural trade.

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Item Link Original Source
Full view   University of Minnesota
Full view   NO10 The Ohio State University
Full view   no.10-11 (1976:June-Dec.) Columbia University
Full view   no.10-14 1976-1978 University of Michigan
Full view   no.12 1977 The Ohio State University
Full view   no.13 The Ohio State University
Full view   no.13 University of California