TY  - JOUR
AU  - Karnik, S.M.
TI  - On maps of spaces determined by countable subspaces
JO  - Portugaliae mathematica
PY  - 1981
SP  - 405
EP  - 412
VL  - 40
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1981__40_4_115468/
LA  - en
ID  - PORMA_1981__40_4_115468
ER  -