| 1.
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図書
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by E.L. Thorndike, Clarence L. Barnhart
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| 2.
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図書
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edited by Clarence L. Barnhart, Robert K. Barnhart ; prepared in cooperation with World Book, Inc
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| 3.
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図書
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edited by Clarence L. Barnhart, Robert K. Barnhart ; prepared in cooperation with World Book-Childcraft International, Inc
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| 4.
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図書
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Clarence L. Barnhart, Sol Steinmetz, Robert K. Barnhart
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| 5.
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図書
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Clarence L. Barnhart, editor in chief ; Robert K. Barnhart, managing editor ; prepared in cooperation with Field Enterprises Educational Corporation
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| 6.
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図書
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Clarence L. Barnhart, Sol Steinmetz, Robert K. Barnhart
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| 7.
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図書
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C. L. Barnhart, editor in chief; Jess Stein, managing editor; assisted and advised by 355 authorities and specialists
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| 8.
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図書
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ed. by Clarence L. Barnhart
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| 9.
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図書
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ed. by Clarence L. Barnhart
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| 10.
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図書
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edited by Clarence L. Barnhart ; with the assistance of William D. Halsey and a staff of more than 350 consulting scholars, special editors, and other contributors
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