National Child Development Study: Age 55, Sweep 9, 2013
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Abstract copyright UK Data Service and data collection copyright owner. The National Child Development Study (NCDS) is a continuing longitudinal study that seeks to...
本摘要的版权归英国数据服务中心(UK Data Service)及该数据采集项目的版权所有者共同所有。全国儿童发展研究(National Child Development Study, NCDS)是一项持续性纵向研究,旨在……



