颁布单位：[the University of Pittsburgh] |  颁布时间：2017 |  实施时间：2017 |  学科分类：[School, absenteeismChronic, absenteeismElementary, school, absenteeismSchool, refusal, behaviorParent, perspectives, on, absenteeism]

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颁布单位：[University of Alberta] |  颁布时间：1991 |  实施时间：1991 |  学科分类：[School, principals--Alberta--Rating, of, Teacher, participation, in, administration, Teacher-principal, relationships, Leadership--Effect, of, teacher-principal, relationships, on, Teaching--Effect, of, school, administrators, on]

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颁布单位：[University of Alberta] |  颁布时间：1989 |  实施时间：1989 |  学科分类：[School, libraries--Effect, of, school, principals, on, Teacher-librarians, Elementary, school, libraries]

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颁布单位：[University of Alberta] |  颁布时间：1976 |  实施时间：1976 |  学科分类：[School, discipline, School, discipline--Effect, of, elementary, school, principals, on, Classroom, management, Elementary, school, principals--Philosophy, School, management, and, organization]

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