Four Colours Suffice. How the Map Problem was Solved
| Автор: | |
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| Мова: | Англійська |
| Опубліковано: |
London, Penguin Books, 2003
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| Предмети: | |
| Формат: | Книга |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=217894 |