1931 Országos Bajnokság I (men's water polo) was the 25th water polo championship in Hungary. There were nine teams who played one round match for the title.
1931 Országos Bajnokság I (men's water polo) was the 25th water polo championship in Hungary. There were nine teams who played one round match for the title. (en)
1931 Országos Bajnokság I (men's water polo) was the 25th water polo championship in Hungary. There were nine teams who played one round match for the title. (en)