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판 17개, 최신 판부터
World Book, Inc., 2004, ISBN 9780716622031
World Book, 2003, ISBN 9780716660309
World Book Inc, 2000, 양장(하드커버), ISBN 9780716601975
World Book, Inc., 1996, ISBN 9780716601968
World Book, Inc., 1994, ISBN 9780716601944
World Book Inc, 1994, 양장(하드커버), ISBN 9780716601951
World Book International, 1993, ISBN 9780716660071
World Book, 1992, ISBN 9780716660064
World Book, 1989, ISBN 9780716660033
World Book, Inc., 1989, ISBN 9780716601890
World Book, 1988, ISBN 9780716665007
World Book, 1988, ISBN 9780716665014
World Book, 1987, ISBN 9780716660019
World Book-Childcraft International, 1982, ISBN 9780716601821
Field Enterprises Education Corp., 1970, ISBN 9780716601746
Field Enterprises, 1964, ISBN 9780716601753
World Book, Inc, 양장(하드커버), ISBN 9780716601906
