颁布单位：[University of Alberta] |  颁布时间：1972 |  实施时间：1972 |  学科分类：[Slow, learning, children--Alberta--Edmonton, Youth, with, mental, disabilities--Education, (Secondary)--Alberta--Edmonton, Youth, with, mental, disabilities--Vocational, education--Alberta--Edmonton, W.P., Wagner, High, School]

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