TY  - BOOK
AU  - Viro O Ya
AU  - Ivanov O A
AU  - Kharlamov V M
AU  - Netsvetaev N Yu
TI  - Elementary topology: problem textbook
SN  - 978-0-8218-8726-4
U1  - 514 
PY  - 2012///
CY  - Providence
PB  - AMS
KW  - Topology
ER  -