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Title: Automatic ionospheric height recorder, serial 6 Mk [Go to resource]
Description: Automatic ionospheric height recorder, serial 6 Mk. II, 1949, made by Union Radio Co. to spec issued by National Physical Laboratory License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1949 Source: Science Museum Creator: Union Radio Co. (maker) Identifier: 1981-825 Go to resource More Like this...
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