It has happened seventy years ago
Letectví + kosmonautika ; 76 , 12 ; 13-15
2000
Article (Journal)
Unknown
Automotive engineering | 1999
Online Contents | 1995
Seventy-five years of excellence
NTRS | 1990
Seventy years of British torpedoes
Engineering Index Backfile | 1941
Seventy years ago: The mid-twenties
Online Contents | 1996
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