. QST . TEMPERATURECONTROL OVENS Small, compact, light, uni-form, to complete the environ-mental control picture. A widevariety

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Size: 1308px × 1910px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1910, booksubjectradio, bookyear1915