Geheime wapens : van raket tot atoom-bom / door J.C. Forthaas typhus epidemie in het gevangenen-kamp te Gardelegen in Duitschland : rapport van de Engelsche Staats-Commissie ingesteld om onderzoek te doen naar de behandeling van Britsche … How Botha and Smuts conquered German South West : a full record of the campaign from official information by Reuter's special war correspondents who accompanied … German scientific establishments / reported by L.E. Simon ; publ. by the Office of Technical Services Dep. of Commerce