. The Bell System technical journal . MdiithK- A\crage of Diurnal Xariation of NoiseBi-lfast. 24,(UII) Cvrli-s 1924. iiifflMimntiii MoiiiIiIn of Wiriation of NoiseBelfast, Maine Cycles 1924 )/() :iii(>.\i: .w -{ITmi I fW\ 11T!;! 11 ^^ 11! !Th 11 !?f j 11 tlTi! 11 rf^^ I p^| [^^ • I jTHf I fl^i t°

---

Size: 1687px × 1482px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1