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XB-70 Valkyrie: The Cold War’s Ultimate Supersonic MarvelImagine a bomber so fast it could outrun any fighter jet, soaring at Mach 3 speeds across continents. The XB-70 Valkyrie was this dream made real, pushing engineering to new heights. But its path was ...
BBC Bitesize has plenty of exam board specific information to help you to prepare for your exams. BBC Bitesize is home to a range of exam specific guides to help kick start your GCSE revision ...
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