Volume 31 (1986)

• Hideyasu Kawai:
  A Note on Prime Ideals in a Formal Power Series Ring
  pp.1-4.
• Yoshiaki Ohno, Ryoji Asahi:
  Theory of a quasi-one dimensional organic ferromagnet, m-polydiphenylcarbene Hartree-Fock and Hubbard approximations
  pp.5-29.
• Isawo Kawai, Sadako Yoshitaka, Emi Yamamoto:
  Systematic Studies on the Conducting Tissue of the Gametophyte in Musci (14) Anatomy of the Stems of Rhizogonium, Mnium and Fissidens
  pp.31-42.