On ionospheric investigations by coherent radiowaves emitted from artificial Earth satellites Ja. L. Al'pert OriginalPaper Pages: 551 - 602
The interpretations of ultraviolet observations of comets H. U. Keller OriginalPaper Pages: 641 - 682
Latitudinal structure of the solar wind and interplanetary magnetic field M. DobrowolnyG. Moreno OriginalPaper Pages: 685 - 748
Magnetic field variations in the polar region during magnetically quiet periods and interplanetary magnetic fields Ya. I. Feldstein OriginalPaper Pages: 777 - 861