Book Series of the
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Mathematics and Its Applications, Multibody System
Mechanics: by V. KONOPLEV and A. CHEREMENSKY |
Mathematics and Its Applications, Geometrical Methods for by P. POPIVANOV |
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Mathematics and Its Applications, by I. DERZHANSKI |
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Mathematical Library, BULGARIAN
MATHEMATICAL COMPETITIONS, by
S. Grozdev, E. Kolev, |
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