TY - JOUR TI - GMJ volume 33 issue 1 Cover and Back matter JO - Glasgow mathematical journal PY - 1991 SP - b1 EP - b2 VL - 33 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.1017/S0017089500007953/ DO - 10.1017/S0017089500007953 ID - 10_1017_S0017089500007953 ER -