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Title: Stopwatch, for timing balloon ascents, calibrated to 1991 [Go to resource]
Description: Stopwatch, for timing balloon ascents, calibrated to 1991 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: stopwatch Temporal: 1980-1990 Source: Science Museum Identifier: 2004-24 Go to resource More Like this...
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