1
出版事項: c2010.
Superior document: Jumping frogs ; 3
Links: 全文の入手
2
出版事項: c2003.
Superior document: Jumping frogs
Links: 全文の入手
3
出版事項: [2011],, c1983.
Superior document: [Mark Twain library ; 4]
Links: 全文の入手
4
出版事項: [2011],, c1995.
Superior document: The Mark Twain library ; [8]
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