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1 - Discontinuous groups of isometries in the hyperbolic plane
Fenchel, Werner (1905-1988)   /   Nielsen, Jakob (1890-1959)   /   Schmidt, Asmus L. (Ed.)

Cote : [60 FEN 03]

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2 - Vorlesungen ├╝ber elementare Mechanik
Nielsen, Jakob (1890-1959)   /   Frenchel, Werner (1905-1988) (Trad.)

Cote : [84 NIE 1935]