264e2b658a670987cc34c154cc55c5eb-ocr ๐ 264e2b658a670987cc34c154cc55c5eb-ocr ๐ Library ๐ 1972 ๐ Russian
96a5cc80ceb06c5e8c5d9a2a1afd48bb-ocr ๐ 96a5cc80ceb06c5e8c5d9a2a1afd48bb-ocr ๐ Library ๐ 2007 ๐ ะะะ ะะตัะตัั-ะัะตัั ๐ Russian
_518966.c5e4d3c16775f2a13e262b01be0c3300 ๐ _518966.c5e4d3c16775f2a13e262b01be0c3300 โ Hot Media Publication ๐ Library ๐ 2011 ๐ Hot Media Publication ๐ English
4cc4e248659b95b5a607422e0be1690c-ocr ๐ 4cc4e248659b95b5a607422e0be1690c-ocr ๐ Library ๐ Russian
_507529.5c2320e2940cc4da48d9ac3ea9b4cc63 ๐ _507529.5c2320e2940cc4da48d9ac3ea9b4cc63 โ Canadian Mathematical Society ๐ Library ๐ 2005 ๐ English