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Frontiers of Education in China > 2012 > 7 > 3 > 309-337
Population Research and Policy Review > 1998 > 17 > 2 > 197-222
Frontiers of Education in China > 2012 > 7 > 3 > 309-337
Population Research and Policy Review > 1998 > 17 > 2 > 197-222