1980 CENSUS TRACT RELATIONSHIP FILE, 1970 - 1980

$175 for 1 reel (6250 bpi) Technical Documentation included free with product - $10 when purchased separately Data Development VI-32 Order from Customer Services, Bureau of the Census, Washington, DC 20233 (Tel. 301-763-INFO(4636); FAX 301-457-3842)

Shows which 1970 Census Tracts codes changed for 1980 due to creation of new tracts or redefinition.