In accordance with the stated provisions of the Library Services and Construction Act (LSCA), as amended, and related regulations, this basic state plan contains criteria for determining adequacy of public library services for persons residing in areas without services or with inadequate services, disadvantaged persons residing in areas with high concentrations of low income families, persons of limited English speaking ability, persons in state institutions, physically handicapped persons, and persons and libraries using services from major urban resource libraries. It also contains criteria to assure priority to programs or projects serving areas with high concentrations of low income families and to areas with high concentrations of persons of limited English speaking ability. Tables give the unemployment rate and 1979 per capita personal income for Michigan counties as a basis for comparison. Lists are then provided of the economically disadvantaged counties and the Michigan library cooperatives heavily involved in serving economically disadvantaged areas. It is noted that these cooperatives have priority over public libraries for Title I grants. (Author/ESR)