TY - JOUR TI - Thesis Abstracts JO - Canadian mathematical bulletin PY - 1970 SP - 298 EP - 298 VL - 13 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0008439500031854/ DO - 10.1017/S0008439500031854 ID - 10_1017_S0008439500031854 ER -