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Title: Selenium photocells by Megatron Ltd., London, in box [Go to resource]
Description: Selenium photocells by Megatron Ltd., London, in box License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: personal property
photocells
light measuring devicesSource: Science Museum Creator: Megatron Limited Identifier: 1987-528/35 Go to resource More Like this...
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