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^: *http://search.proquest.com/science/publication/35330/citation/ 13F2D898D3AF8BFF2F/1?accountid=50576 (http://search.proquest.com/science/publication/35330/citation/1 3F2D898D3AF8BFF2F/1?accountid=50576)
^: Williams J.R.; Pachta M.J.; Roozeboom K.L.; Llewelyn R.V.; Claassen M.M.; Bergtold J.S.
^: Risk analysis of tillage and crop rotation alternatives with winter wheat [ , ( ) . , ]
^: Journal of Agricultural and Applied Economics. - Athens, 2012; Vol.44,N 4. - P. 561-576
^: 2012
^: Bibliogr.:p.575-576

^TRN: 1394009
^:
^:
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