TY  - BOOK
AU  - Pontryagin, L. S.
TI  - Foundations of combinatorial topology
SN  - 9780486406855
U1  - 513.83 PON-L 
PY  - 1980///
CY  - New York
PB  - Dover Publication
KW  - Combinatorial topology
KW  - Topology
ER  -