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Hermann Hermann Göring Hermann Hoth Hermann Hesse Hermann Fegelein Hermann Balck Hermann Oberth Hermann von Helmholtz Hermann Rorschach Hermann GmeinerTài liệu tham khảo
WikiPedia: Hermann Oberth //nla.gov.au/anbd.aut-an35934898 http://www.historyofinformation.com/expanded.php?i... http://www.kiosek.com/oberth/ http://www.mufon.com/MUFONNews/znews_oberth.html http://aleph.nkp.cz/F/?func=find-c&local_base=aut&... http://rumfart.dk/vis.asp?id=34 http://www.allstar.fiu.edu/aero/tsiolkovsky.htm http://catalogue.bnf.fr/ark:/12148/cb11491876j http://data.bnf.fr/ark:/12148/cb11491876j http://www.idref.fr/119971100