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Baltic Region
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Kantian Journal
Surgical Practice
Differential Geometry of Manifolds
Vestnik
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Differential Geometry of Manifolds
1982 №13
О вырожденных конгруэнциях, порожденных квадрикой и плоскостью
Differential Geometry of Manifolds
1982 №13
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О вырожденных конгруэнциях, порожденных квадрикой и плоскостью
