International conferences Comprises- - abstract of a conference paper by Peter Shepherd entitled 'The Fifth Follow-up of the National Child Development Study' to be given at the IOS/IASS (International Association of Survey Statisticians) Conference on Survey Design, Methodology and Analysis, 4-7 July 1990 - copy of a paper entitled 'A Sociological Perspective on the Design and Analysis of Longitudinal Surveys' given by Angela Dale (SSRU) at the International Sociological Association Conference, Madrid, July 1990 1990