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Localized pits and peaks in forbush decrease, associated with stratified structure of disturbed and undisturbed magnetic fields K. NagashimaS. SakakibaraI. Morishita OriginalPaper Pages: 551 - 587
Sodar observations of the antarctic boundary layer in a deglaciated area: Preliminary results G. MastrantonioR. OconeG. Fiocco OriginalPaper Pages: 589 - 597
Polar stratospheric clouds and ozone depletion: Relevance of extendedin situ observations G. P. GobbiA. AdrianiM. Viterbini OriginalPaper Pages: 599 - 616
Abnormal behaviour of some parameters revealed in the Georgian SSR before the Armenia earthquake of December 7, 1988: a preliminary report G. AreshidzeV. ChkuaseliG. Melikadze OriginalPaper Pages: 617 - 630
Preliminary laboratory observations of nonlinearity electromechanic effects P. F. BiagiP. ManjgaladzeV. Sgrigna OriginalPaper Pages: 631 - 638
Cosmic-ray intensity increase observed on September 29, 1989: the Chilean neutron monitor data E. G. CordaroN. IucciM. Storini OriginalPaper Pages: 639 - 644
On the activity and structure of the Quadrantid meteor stream V. PorubcanG. Cevolani Note Brevi Pages: 653 - 662
Northern foehn and ground-level ozone at Ispra C. GandinoW. LeyendeckerS. Sandroni Note Brevi Pages: 669 - 676