1 - Proceedings of the 12th Symposium on Ring theory held at Hokkaido University, Sapporo August 31-September 1, 1979
Harada, Manabu (Ed.)   /   Endo, Shizuo (1924-....) (Collab.)   /   Nagahara, T. (Collab.)   /   Tominaga, H. (Collab.)   /   Tachikawa, H. (Collab.)

Cote : [16 HAR 80-12]

2 - Proceedings of the 13th Symposium on Ring theory held at Okayama University, Okayama September 28-30, 1980
Tominaga, Hisao (Ed.)   /   Endo, Shizuo (1924-....) (Collab.)   /   Nagahara, T. (Collab.)   /   Tachikawa, H. (Collab.)   /   Harada, Manabu (Collab.)

Cote : [16 TOM 81-13]