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Baltic Region
Slovo.ru
Kantian Journal
Surgical Practice
Differential Geometry of Manifolds
Vestnik
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Differential Geometry of Manifolds
1981 №12
Конгруэнции квадрик с одной вырождающейся фокальной поверхностью
Differential Geometry of Manifolds
1981 №12
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Конгруэнции квадрик с одной вырождающейся фокальной поверхностью
