TY - JOUR TI - GMJ volume 12 issue 1 Cover and Front matter JO - Glasgow mathematical journal PY - 1971 SP - f1 EP - f7 VL - 12 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500001038/ DO - 10.1017/S0017089500001038 ID - 10_1017_S0017089500001038 ER -