HAL (Le Centre pour la Communication Scientifique Directe) · 2012 · 18 citations · 6 references
AgricultureAgricultural EconomicsMarketingAgricultural MarketingAgricultural PolicyCrop ProductionAgricultural Marketing PolicyAgricultural MarketsAgricultural Production EconomicsAgricultural Production SystemsCrop Production EconomicsIntegrated Crop ManagementAgricultural Extension EffectsAgricultural Product MarketingCrop MarketingDisease-resistant VarietiesFarmer Marketing BehaviorMarket-oriented ProductionNon-farm Income DistributionNon-farm Income Mix
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Sample Selection Bias as a Specification Error
James J. Heckman · Econometrica · 1979 · 28.9K citations