Або купіть у застосунку – тут є трекер читання і ще бага-а-ато цікавок ;)
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Опис
* Clearly structured with proven systematic: The ordering system according to the ring size of the heterocycles will remain. * New: The contents of the important chapter "Problems and their Solutions" will be completely re-structured and enhanced with up-to-date scientific exercises. A great tool for self-testing and exams.