为了促进1990年人口普查资料的开发利用,联合国人口基金对“四普”数据分析提供援助,设立了“P33项目”,采用向国内有关大专院校、科研单位和部委进行招标的方式,确定由国内24个单位承包了1990年人口普查数据的25个分析课题。为使该项目 In order to promote the development and utilization of the 1990 census data, UNFPA provided assistance to the “four generals” data analysis and set up the “P33 Project”. By adopting the method of bidding to relevant tertiary institutions, research institutes and ministries in China, Twenty-four domestic contractors have contracted 25 analytical topics for the 1990 census data. To make the project