00754nam2-22002771i-450-99000842209040332120061127134244.0000842209FED01000842209(Aleph)000842209FED0100084220920061120d1986----km-y0itay50------baengGBa-------001yyInternational migration: a spatial theoretical approachJ. Saltp. 166-193ill.001000746772MigrazioniSalt,John146307ITUNINARICAUNIMARCAN990008422090403321ILFGEInternational migration: a spatial theoretical approach727061UNINA