| 000 | 00443nam a2200133 a 4500 | ||
|---|---|---|---|
| 008 | 170703s1991####bl ||||f#|||||00| 0#uuu#d | ||
| 003 | AR-SmCIES | ||
| 024 | 8 | _aCBPF-NF-039-91 | |
| 091 | _a38306 | ||
| 245 | 1 | 0 | _aCompact unions of closed subsets are closed and compact intersections of open subsets are open. |
| 260 |
_a[s.l.] : _b[s.n.], _c1991. |
||
| 999 |
_c17007 _d17007 |
||