Volume 18 (1973)

• Sunao Kawasaki, Teiichiro Yagi:
  Electron Cyclotron Instability in a Spiraling Electron Beam-Plasma System
  pp.1-9.
  (Errata)
• Isawo Kawai:
  Die Kiefernforst-Gesellschaften der Hokuriku Region, Japan (3) Eine Studie zur Sukzession auf Grund der schichtenförmigen Konstruktion und zur Stellung der Kieferngesellschaft für das pflanzensoziologische System
  pp.11-41.
• Kenji Konishi, Takeshi Ishibashi, Kazuo Tsuruyama:
  Find of Nummulites and Orthoquartzitic Pebbles from Eocene Turbidites in Shimajiri Belt, Okinawa
  pp.43-53.
• Minoru Kimura:
  Finite Charge Renormalization in the Theory of a One-dimensional Metal with a Half-filled Band
  pp.55-65.
• Yoshitake Yoshimura, Ryokichi Tsuchiya:
  Derivatographic Studies on the Dehydration of Alums
  pp.67-75.
• Yoshihiro Kojima:
  The PMR Studies of Tris-Type Mixed Complexes of Cobalt(III) With Amino Acid and Diamine
  pp.77-95.
• Hironori Kamijo, Toshiharu Watanabe:
  On the Diatoms from Lake Kahoku-gata and Its Inflows
  pp.97-153.