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the Sperti Mark IV Biarritz was a mercury vapour arc discharge sunlamp, combined with two metal tubulars
the Sperti Mark IV Biarritz was a mercury vapour arc discharge sunlamp, combined with two metal tubulars
1976
Sperti Mark IV Biarritz, a mercury vapour arc
discharge sunlamp, combined with two metal
tubulars. USA.
building
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