TY  - BOOK
AU  - Viro O.Ya...[et al.]
TI  - Elementary topology: problem textbook
SN  - 9780821887264
U1  - 514 
PY  - 2008///-R2012
CY  - Providence, Rhode island
PB  - American mathematical Society;Hyderabad:University Press[Distributor]
KW  - 
N1  - Includes Bibliographical references and index
ER  -