Agribusiness. 1985;1(1):89-97. doi: 10.1002/1520-6297(198521)1:1<89::aid-agr2720010110>3.0.co;2-i Q22.42025

Causal relationships among world wheat prices

世界小麦价格之间的因果关系

DOI: 10.1002/1520-6297(198521)1:1<89::aid-agr2720010110>3.0.co;2-i

摘要

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