French version available in IDRC Digital Library: Logement élémentaire : viabilisation et habitat dans les pays en développementSpanish version available in IDRC Digital Library: Vivienda básica : políticas sobre lotes urbanos, servicios y vivienda en los países en desarrolloPresents research facts, insights, and ideas related to the planning and implementation of basic housing programmes, the two most common forms of which are at present community upgrading and sites and services. Includes a bibliography