Difference between revisions of "VT-1"
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[[File:VT-1 tube.jpg|300px]] | [[File:VT-1 tube.jpg|300px]] | ||
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| + | [[File:VT-1.NA.jpg|500px]] | ||
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| + | ==References== | ||
| + | * Air service information circular Vol. III, May 14, 1921, No.229 | ||
