1.
図書 |
introduction by Clarence L. Barnhart ; under the editorial supervision of Norman Cousins ; with a new suppllement by R.A. Goodwin and Stuart Flexner
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2.
図書 |
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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3.
図書 |
edited by Clarence L. Barnhart, Robert K. Barnhart ; prepared in cooperation with World Book-Childcraft International, Inc
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4.
図書 |
edited by Clarence L. Barnhart, Robert K. Barnhart ; prepared in cooperation with World Book, Inc
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5.
図書 |
edited by Clarence L. Barnhart, Robert K. Barnhart ; prepared in cooperation with World Book-Childcraft International, inc
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6.
図書 |
Clarence L. Barnhart, editor in chief ; prepared in cooperation with Field Enterprises Educational Corporation
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