ԳԱԱ Ինստիտուտների համահավաք գրացուցակ = The real projective plane.
Coxeter H.S.M.
The real projective plane. Coxeter H.S.M. - New York a.o. McGraw-Hill Book Co. 1949 - 206 p.
514.14
The real projective plane. Coxeter H.S.M. - New York a.o. McGraw-Hill Book Co. 1949 - 206 p.
514.14
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