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From Crossley to Carter: The Life and Times of an Historic Cooke Refractor | SpringerLink
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Carl Zeiss Jena Tessar 13.5cm 135mm F4.5 on F Deckel-Muchen Compur Shutter | eBay
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Carl Zeiss Microscopy Deutschland GmbH - Stereomicroscope SteREO Discovery.V8 with transillumination base 300 - 495015-0022-000
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TELESCOPE WITH STAND AND LARGE NUMBER OF ACCESSORIES IN CASE, Carl Zeiss, Jena, 1920s, no. 8753, with additional purchased equipment. Photo, Cameras & Lenses - Optics - Auctionet
Zeiss refractor telescope 40 cm for 5 meters focal length, built in 1935. Specola Vaticana Observatory, Castel Gandolfo (Italy Stock Photo - Alamy
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Carl Zeiss Microscopy Deutschland GmbH - Stereomicroscope SteREO Discovery.V12 - 495007-0011-000
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