"USA" . . "Zonder onderwerpscode: economie." . . "Agrarpolitik" . . "1920-1960" . . "Baumwollanbau" . . "Baumwollanbau / Geschichte / Grüne Revolution / Agrarpolitik / USA." . . . . "Hog Round Marketing, Seed Quality, and Government Policy : Institutional Change in U.S. Cotton Production, 1920-1960" . . "Hog round marketing, seed qualitiy, and government policy institutional change in U. S. cotton production, 1920-1960" . "Hog round marketing, seed quality, and government policy : institutional chance in US cotton production, 1920-1960" . . . . . . . . . . . "Hog round marketing, seed quality, and government policy: institutional change in U.S. cotton production, 1920-1960" . . . . "Hog Round Marketing, Seed Quality, and Government Policy Institutional Change in U.S. Cotton Production, 1920-1960"@en . . . . "Hog round marketing, seed quality, and government policy institutional change in U.S. cotton production, 1920-1960"@en . "Hog round marketing, seed quality, and government policy : institutional change in U.S. cotton production, 1920 - 1960" . "Hog round marketing, seed quality, and government policy: institutional change in US cotton production, 1920-1960" . . . . . . . . . "Hog round marketing, seed quality, and government policy : institutional change in U.S. cotton production, 1920-1960"@en . "Hog round marketing, seed quality, and government policy : institutional change in U.S. cotton production, 1920-1960" . . . . . . . "Hog round marketing, seed quality, and government policy : institutional change in US cotton production, 1920-1960" . . "Geschichte" . . "National Bureau of Economic Research" . . "Grüne Revolution" . . . .