TY  - JOUR
AU  - B. Węglorz
TI  - Some preservation theorems (II)
JO  - Colloquium Mathematicum
PY  - 1969
SP  - 23
EP  - 26
VL  - 20
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-20-1-23-26/
DO  - 10.4064/cm-20-1-23-26
LA  - en
ID  - 10_4064_cm_20_1_23_26
ER  -