1. Calculation of the spin-dependent effective mass of the conduction electron by Green's functions

   • J. Mathon

   OriginalPaper Pages: 869 - 883

2. Group analysis of Nd³⁺ energy spectrum in crystal field

   • J. Málek

   OriginalPaper Pages: 884 - 891

3. Some investigations of inductive properties of forward biased selenium rectifiers

   • J. G. Zaugol'nikova

   OriginalPaper Pages: 892 - 897

4. Absorption bands of lead in mixed KCl + KBr crystals

   • A. Bohun
   • V. Piskáčková
   • J. Trnka

   OriginalPaper Pages: 898 - 901

5. Absorption bands of lead in alkali chlorides in the presence of hydroxyl ions

   • M. Lébl

   OriginalPaper Pages: 902 - 904

6. The damping of acoustic waves in the positive column of a low-pressure discharge

   • S. Šubertová

   Letter to the Editor Pages: 905 - 906

7. Book reviews

   • J. Peřina
   • J. Vlachý

   BookReview Pages: 907 - 909

8. International Meeting on Ferroelectricity

   • J. Fousek

   Report Pages: 909 - 910

9. Professor Čestmír Muzikář

   • V. Votruba

   Announcement Pages: 910a - 910d