European programmes on sounding-rocket and balloon research in the auroral zone : proceedings of a symposium held at Schloss Elmau, Germany,3-7 May 1976
[organised by ESA Programme Advisory Committee on the Special Project concerning the Launching of Sounding Rockets and Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt]
Bok Engelsk 1976