01021nam a2200265 i 450099100119817970753620020507185048.0940923s1955 us ||| | eng b10814413-39ule_instLE01308571ExLDip.to Matematicaeng510AMS 49QYoung, Laurence Chisholm50348On generalized surfaces of finite topological types /L. C. YoungProvidence, R.I. :American Mathematical Society,195563 p ;26 cm.Pubbl. come vol.17 (1955) della rivista "Memoirs of the American Mathematical Society"Manifolds.b1081441321-09-0628-06-02991001198179707536LE013 49Q YOU11 (1955)12013000009704le013-E0.00-l- 01010.i1092037728-06-02On generalized surfaces of finite topological types925280UNISALENTOle01301-01-94ma -engus 01