01043nam0-22003371i-450-99000789854040332120080605103009.092-2-109517-7000789854FED01000789854(Aleph)000789854FED0100078985420040622d1997----km-y0itay50------baengCH--------001cyInternational migration statisticsguidelines for improving data collection systemsR[ichard] E. Bilsborrow, Graeme Hugo ... [et al.]GenèveInternational Labour Office©1997xii, 441 p.tab.25 cmContiene bibl. (pp. 411-425)MigrazioniStatistiche304.807 2721itaBilsborrow,Richard E.Hugo,GraemeITUNINARICAUNIMARCBK990007898540403321304.80727 BIL 11237BFSBFSInternational migration statistics668005UNINA