%0 Journal Article
%T "Between unmanned and manned space research" Dr. Siegfried J. Bauer for his 80th birthday
%A G. K. Hartmann
%J History of Geo- and Space Sciences (HGSS)
%D 2011
%I Copernicus Publications
%R 10.5194/hgss-2-81-2011
%X No abstract available.
%U http://www.hist-geo-space-sci.net/2/81/2011/hgss-2-81-2011.html