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Are you John Duffield, author of the books below?
Over a Barrel by John Duffield World Power Forsaken by John Duffield Balance Sheet by John Duffield RELATIVITY + by John Duffield Power Rules by John Duffield A Cry For Help by John Duffield Montana Coal Market to the Year 2000 by John Duffield A Contingent Valuation Assessment of Montana Deer Hunting by John Duffield Instream Flows in the Missouri River Basin by John Duffield Market Value of Agricultural Water Leased for Instream Flows by John Duffield


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