TY - JOUR AU - Hansen, Vagn Lundsgaard TI - On Steenrod Bundles and the van Kampen Theorem JO - Canadian mathematical bulletin PY - 1988 SP - 241 EP - 249 VL - 31 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1988-037-x/ DO - 10.4153/CMB-1988-037-x ID - 10_4153_CMB_1988_037_x ER -