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Title: Photograph of an artificial horizon made for the observatory [Go to resource]
Description: Photograph of an artificial horizon made for the observatory at the Military Academy at St. Petersburg in Russia. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: photograph
artificial horizons (glass)Temporal: 1876 Source: Science Museum Creator: Pulkovo Observatory Identifier: 1876-673 Go to resource More Like this...
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