National Child Development Study: Ages 7 and 11, Sweeps 1-2, Bristol Social A...
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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 follow the...
本摘要版权归英国数据服务中心（UK Data Service）及数据采集版权所有者所有。国家儿童发展研究（National Child Development Study, NCDS）是一项持续开展的纵向研究，旨在追踪……
