wheat genetic resources, employing actual data on frequency distributions, disease losses, and search costs. Experiments … observation that wheat breeders 'use' gene banks rarely does not imply that marginal accessions have low value. High costs of …

Wheat Trade in 16th and 17th century Genoa 3. Agriculture and the market: the producers' perspective (Italy, 18th cent.) 4 …. The new "American Wheat System", Frank H. Peavey, and the "Great Western Game" 6. Finance and production in the Chicago …Introduction. Actors, places, and exchanges of the global wheat market 1. Grain merchants and famines in late …