1.
図書 |
C.L. Barnhart, editor in chief ; Jess Stein, managing editor ; assisted and advised by 355 authorities and specialists
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2.
図書 |
[edited by] Robert K. Barnhart, Sol Steinmetz with Clarence L. Barnhart
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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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