TY  - BOOK
AU  - Alling, Norman L. and Greenleaf, Newcomb
AU  - Greenleaf, Newcomb ; jt. auth.
TI  - Foundations of the theory of Klein surfaces
T2  - Lecture notes in Mathematics
U1  - 515.9 
PY  - 1971///
CY  - Berlin
PB  - Springer-Verlag
ER  -