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- CIMMYT world wheat facts and trends [elektronický zdroj] . . Mexico, D.F., Mexico : Centro Internacional de Mejoramiento de Maiz y Trigo, [1985-1999] . v.
- Wheat ... yearbook issue [elektronický zdroj] . . Washington, D.C. : Economic Research Service, U S. Dept. of Agriculture, 1997. . 1 v.