TT-70

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References

  • TM 11-2229 Teletypewriters TT-47A/UG, TT-48A/UG TT-69A/UG, TT-70A/UG. Dept. of the Army. Jun. 1957. 1 v. (various pagings) U408.3.A13 TM 11-2229 Jun. 1957