TY  - BOOK
AU  - Alexandroff,Paul
TI  - Elementary concepts of topology
SN  - 048660747X
PY  - 1961///
CY  - New York: 
PB  - Dover publications, 
KW  - TOPOLOGIA
KW  - INIST
KW  - ECUACIONES ALGEBRAICAS
KW  - MAINFOLDS
ER  -