TY  - BOOK
AU  - Croom,Fred H
TI  - Principles of Topology
SN  - 978-0-486-80154-4
U1  - 514 
PY  - 1989///
CY  - Philadelphia 
PB  - Saunders College Publishing 
KW  - Social sciences
KW  - Collections of general statistics
KW  - General statistics of Europe
ER  -