{"title":"根据社会经济四分位数划分的校外学习时间","authors":"","doi":"10.1787/44c24043-en","DOIUrl":null,"url":null,"abstract":"","PeriodicalId":86389,"journal":{"name":"Bollettino - Societa medico-chirurgica di Pisa","volume":"1 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Learning time outside of school according to socio-economic quartiles\",\"authors\":\"\",\"doi\":\"10.1787/44c24043-en\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"\",\"PeriodicalId\":86389,\"journal\":{\"name\":\"Bollettino - Societa medico-chirurgica di Pisa\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2021-07-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Bollettino - Societa medico-chirurgica di Pisa\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1787/44c24043-en\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bollettino - Societa medico-chirurgica di Pisa","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1787/44c24043-en","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}