اذا لم تجد ما تبحث عنه يمكنك استخدام كلمات أكثر دقة.
Author: Dudeney, Henry Ernest, 1857-1930
Title: Amusements in Mathematics
Language: English
LoC Class: QA: Science: Mathematics
Subject: Mathematical recreations
Subject: Puzzles
Release Date: Sep 17, 2005
Copyright Status: Public domain in the USA.
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