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Title: Five beads used in assay of penicillin in 1940s, two glass a [Go to resource]
Description: Five beads used in assay of penicillin in 1940s, two glass and three ceramic License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1964-458/9 Go to resource More Like this...
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