TY  - JOUR
AU  - Grace, E. E.
TI  - Peripheral Covering Properties Imply Covering Properties
JO  - Canadian journal of mathematics
PY  - 1968
SP  - 257
EP  - 263
VL  - 20
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1968-025-8/
DO  - 10.4153/CJM-1968-025-8
ID  - 10_4153_CJM_1968_025_8
ER  -