01111nam--2200373---450-99000324804020331620090519140146.00-387-90552-9000324804USA01000324804(ALEPH)000324804USA0100032480420090519d1981----km-y0itay50------baengUS||||||||001yy<<The>> non-euclidean, hyperbolic planeIts structure and consistencyPaul Kelly, Gordon MatthewsNew york [etc.]Springer-Verlagcopyr. 1981XIII, 333 p.graf.24 cmUniversitext2001UniversitextGeometria non euclideaGeometria di Lobachevski516.9KELLY,Paul376154MATTHEWS,Gordon441869ITsalbcISBD990003248040203316516.9 KEL7772/CBS516.900221173BKSCIRSIAV69020090519USA011401Non-euclidean, hyperbolic plane83020UNISA