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21 notes on mathematics. Release 1.Document
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Arduino for beginners in notes Document
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27 notes. Quantum and nuclear physics.Document
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21 problems of electromagnetism.Document
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Astrophysics 21 notesDocument
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21 notes on optics from @jurij0001 Document
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21 notes on molecular physics Document
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21 problems in mechanics from @jurij0001Document
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