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Title: Blue glass bottle of Pyrogallic, with some acid, one of two, [Go to resource]
Description: Blue glass bottle of Pyrogallic, with some acid, one of two, early photographic chemicals, c. 1854. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1854 Source: Science Museum Creator: unknown Identifier: 1939-151/2 Go to resource More Like this...
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