Articles | Volume 2, issue 1
https://doi.org/10.5194/hgss-2-81-2011
Special issue:
https://doi.org/10.5194/hgss-2-81-2011
29 Jun 2011
 | 29 Jun 2011

"Between unmanned and manned space research" Dr. Siegfried J. Bauer for his 80th birthday

G. K. Hartmann