Media type: E-Article Title: Introduction Contributor: Wamsteker, Willem Published: Elsevier BV, 1986 Published in: Advances in Space Research, 6 (1986) 2, Seite 1 Language: English DOI: 10.1016/0273-1177(86)90376-5 ISSN: 0273-1177 Keywords: Space and Planetary Science ; Aerospace Engineering ; General Earth and Planetary Sciences ; Atmospheric Science ; Geophysics ; Astronomy and Astrophysics Origination: Footnote: