Nationaal Scholierenonderzoek 1999 - NSO'99

Survey among pupils of secondary schools with a great number of detailed questions about their income, consumption patterns, and labour. Living conditions at school and at home...针对中等学校学生开展的一项调查，该调查包含大量关于其收入、消费模式及劳动状况的精细化问题，同时覆盖在校与居家的生活状况……