Proceedings of the International congress of mathematicians,Bologna 3-10 september,1928,6v.
Bp1,F8 F9.1-F9.6
51(082.2) PRO 51(082.2) PRO 51(082.2) PRO 51(082.2) PRO 51(082.2) PRO 51(082.2) PRO
Bp1,F8 F9.1-F9.6
51(082.2) PRO 51(082.2) PRO 51(082.2) PRO 51(082.2) PRO 51(082.2) PRO 51(082.2) PRO