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Title: Early variable resistance calibrated in Siemens units [Go to resource]
Description: Early variable resistance calibrated in Siemens units License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1865 Source: Science Museum Creator: Siemens Bros. and Co. (maker) Identifier: 1952-133 Go to resource More Like this...
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