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...一项面向中学学生开展的调研，涵盖大量关于其收入、消费模式与劳动状况的详细问题，并涉及在校与居家的生活状况……