Photographic tracking of artificial satellites A. G. MassevitchA. M. Losinsky OriginalPaper Pages: 308 - 340
Elementary processes involving electrons in the ionosphere Kazuo TakayanagiYukikazu Itikawa OriginalPaper Pages: 380 - 450
Remark to James M. Rosen: Stratospheric dust and its relationship to the meteoric influx Fritz Rössler OriginalPaper Pages: 451 - 452