Structure in dairy production. Impacts of milk quotas and the subsidy scheme

achat agriculteur agricultores agricultural policies cambio estructural changement structurel compra contingent de production costos costs dairy farms dairy industry efficiency eficacia excedentes facteur de production farm management farmers gestion de l'exploitation agricole granjas lecheras industria lechera lait leche manejo de fincas mathematical models milk milk production milk products noruega norway politique agricole precios prices prix production controls production factors production quota produit laitier purchasing structural change subsidies subsidios subvention surpluses