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1.

図書
図書
1. Companion mathematics challenge
Yasuhiro Hosomizu ; editors, Peter Gould, Masami Isoda, Foo Chuan Eng
出版情報: Sydney, NSW : State of NSW, Dept. of Education and Communities, c2011
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2.

図書
図書
2. Red dragonfly mathematics challenge
Yasuhiro Hosomizu ; editors, Peter Gould, Masami Isoda, Foo Chuan Eng
出版情報: [Sydney, N.S.W.] : State of NSW Dept. of Education and Training, c2010
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