Volume 26 (1981)

• Ichirow Aoki, Sunao Kawasaki, Keiichi Kamada, Masaru Masuzaki:
  Microwave Generation by an Intense Relativistic Electron Beam
  pp.1-16.
• Isawo Kawai:
  Die Systematische Forschung auf Grund der Zellteilungsweise für die Bryophyten IV. Die Grundorganisationen und die Zellteilungsweisen in den Gametophyten -(1) Dicranum japonicum Mitt.
  pp.17-26.
• Yoshiomi Furuta, Pierre Kaplan:
  On Quadratic and Quartic Characters of Quadratic Units
  pp.27-30.
• Isawo Kawai:
  Systematic Studies on the Conducting Tissue of the Gametophyte in Musci (12) Anatomical Characteristics of Stems in Some Species of Bartramiaceae
  pp.31-50.
• Hiroaki Sato:
  Bulk Rock Chemistry of the Volcanic Rocks of Goshikidai and Adjacent Areas, northeast Shikoku, Japan
  pp.51-72.
• Toshio Higashino, Chihiro Sakai, Masayuki Otsuki, Tetsumaru Itaya, Shohei Banno:
  Electron microprobe analyses of rock-forming minerals from the Sanbagawa metamorphic rocks, Shikoku Part I. Asemi River area
  pp.73-122.