The Sourcebook provides a methodological framework for decisions concerning decentralization of agricultural services through deconcentration of the public administration, delegation to public or private agencies, devolution, partnerships with civil society organizations or privatization. These different forms of decentralization are presented as options to be considered according to the policy objectives pursued. The use of the methodological framework is illustrated through examples drawn from actual country experiences. Although focussed on the analytical process of determining the production and allocative efficiency of the various options, the Sourcebook also covers the political dimensions that impinge on the desirability and feasibility of decentralization, both at the level of individual organizations and of the government reform process.