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Title: 三角函數和差角公式之證明
Authors: 余進發
Issue Date: Sep-1984
Publisher: 臺灣師範大學科學教育中心
National Taiwan Normal University Science Education Center
Other Identifiers: 21268A0A-70D8-5B3F-8D9C-25EAA1424505
Appears in Collections:科學教育月刊

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