Campbell, J. R. (1985). Administrative and operational procedures for programs for sites and services and area upgrading. Washington, D.C: World Bank.
Παραπομπή Chicago StyleCampbell, J. Ronald. Administrative and Operational Procedures for Programs for Sites and Services and Area Upgrading. Washington, D.C: World Bank, 1985.
Παραπομπή MLACampbell, J. Ronald. Administrative and Operational Procedures for Programs for Sites and Services and Area Upgrading. Washington, D.C: World Bank, 1985.
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