SS Race Theory and Mate Selection Guidelines
SS
Human Accomplishment
Charles Murray
Genesis for the Space Race: The Inner Earth and the Extra Terrestrials
John B. Leith
Der Adler - 1939 - Heft 23 (24 S., Scan)
Der Adler
Improvised Munitions Black Book - Volume 1
Unknown
Improvised Munitions Black Book (1)