История календаря Астрономия 11 класс. Тема "История календаря. Астрономия"
Жинкина Евгения Владимировна, учитель физики МБОУ СОШ №32, Озерский ГО
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![[2-24] Род Энгельгардтов в истории России](https://sun9-78.userapi.com/2RIVyYxPxupZu0tV1ermI0gWq2i7vsOP7K4i7w/N83xgiE2v0A.jpg)
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