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The Triangle

Patricia SmeltzerVictor Smeltzer

出版	Burke, 1976
主題	Juvenile Nonfiction / Concepts / Size & ShapeJuvenile Nonfiction / Mathematics / Geometry
ISBN	02220055489780222005540
URL	http://books.google.com.hk/books?id=tIXWAAAACAAJ&hl=&source=gbs_api