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Title: double achromatic Petzal combination projection lens [Go to resource]
Description: Double achromatic Petzal combination projection lens for use in a lantern slide eprojector. c.1910 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: projection lens Temporal: c.1910 Source: Science Museum Identifier: 1979-559/1461 Go to resource More Like this...
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