1. Long-term variations in geomagnetic and solar activities and secular variations of the geomagnetic field components

   • Jaroslav Střeštík

   OriginalPaper 01 March 1991 Pages: 1 - 6

2. Behaviour of geomagnetic variations across the western ukraine

   • I. M. Logvinov
   • S. N. Kulik
   • F. I. Sedova

   OriginalPaper 01 March 1991 Pages: 7 - 12

3. Filtration of Pc1 wave packets in the ionosphere. Conjugated experiment GEOS-1 — husafell and results of numerical modelling

   • Karel Prikner
   • D. S. Fligel

   OriginalPaper 01 March 1991 Pages: 13 - 32

4. Errata

   Announcement 01 March 1991 Pages: 32 - 32

5. The atmospheric mean energetic level and external forcing

   • Dagmar Novotná
   • Vojtěch Vítek

   OriginalPaper 01 March 1991 Pages: 33 - 38

6. Application of implicit normal mode initialization to a limited-area mesoscale prediction model

   • Věnceslava Pretlová

   OriginalPaper 01 March 1991 Pages: 39 - 58

7. Критика

   • Vladimír Kropáček

   BookReview 01 March 1991 Pages: 59 - 59