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All the rulers of Russia from Rurik to Putin in chronological order
Work to move a charge in an electric field
Our pearl harbor is called a dry river
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Volume of a tetrahedron Regular tetrahedron drawing
Children's library as a special type (type) of library
Presentation catalog Musical presentation of the story of Christmas for schoolchildren
Hominid is an intermediate link between ape and man Ancient hominids
How a person feels when he dies: interesting facts about the last moments of life