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20 строки
532 B
Plaintext
20 строки
532 B
Plaintext
https://proshkolu.ru/user/sgibnev/
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https://proshkolu.ru/user/sgibnev/blog/
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2019
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Sgibnev - Geometry on Movable Drawings ru
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https://chitatel.by/catalog/book/1235989
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329FE11E971D58CE8BEC861976E7D724
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2018
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About introducing Letters in Algebra
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https://www.youtube.com/watch?v=hRcED4U0kqg
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2015
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Sgibnev - Numbers Divisability and Simple Numbers 3rd ed ru
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DA5A1E66AE46FA024E746B521F1A3C33
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Sgibnev - Research Problems for Beginners ru
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????
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Sgibnev - Geometry Helps to Algebra
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http://geometry.ru/kruzhki/big/alg_geo.pdf
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