TY  - DATA
AU  - Young, L. C.
TI  - On generalized surfaces of finite topological types 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9780821899588 (online)
PY  - 1955///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0017
ER  -