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2
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Statistical methods / George W. Snedecor, William G. Cochran.
- 519.5 S6712s 1989
- Snedecor, George W. 1881-1974,
- Iowa State University Press,
- Ames :
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The dynamics of agricultural policy and reform in Zambia / ed. by Adrian Paul Wood...[et al.] ; ill. by A.H. Werner Haas.
- Iowa state university,
- 1990.
- Ames :