'Stability, Change and Development in the British Population: new data collection in NCDS5 and BCS70' Comprises - - 'New Data Collection in the1958 and 1970 British Birth Cohort Studies' - three progress reports dated May and September 1999 and January 2000 - 'New Data Collection in the1958 and 1970 British Birth Cohort Studies: progress report on the tracing of cohort members', dated 14 June 1999 - 'New Data Collection in the1958 and 1970 British Birth Cohort Studies: report to ESRC including use of supplementary funding provided by UKLSC since January 2000' 1999-2000