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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
1985 №16
Об одном классе вырожденных конгруэнций, порожденных коникой и плоскостью
Differential Geometry of Manifolds
1985 №16
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Об одном классе вырожденных конгруэнций, порожденных коникой и плоскостью
