This manual is designed to provide communities and development workers in the developing world with information about some organizations that provide resources for use in rural developmental efforts. Discussed in the introductory section of the guide are the role of the development worker in Third World nations, types of resources, procedures for designing a project, guidelines for choosing appropriate resources, and basic steps in obtaining resources. The next chapter is an index chart consisting of an alphabetical list of organizations that includes information on the organization's region or country of operation, available resources, and field of activity. The next section is an alphabetical listing of organizations according to the country in which their main office is located. When available, each entry in this section contains information concerning the address, basic functions, selected activities, resources, and significant publications of each organization. Concluding the guide are a selected annotated bibliography on appropriate technology and an annotated list of useful periodicals for development workers. (MN)