@book{ BA24814859,
 author = "Block, James H. and Airasian, Peter W. and Bloom, Benjamin Samuel and Carroll, John Bissell",
 title = "Mastery learning : theory and practice",
 publisher = "Holt, Rinehart and Winston",
 year = "1971",
 URL = "https://ci.nii.ac.jp/ncid/BA24814859"
}
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