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Keywords from Image Description:
C E. en Photographs of Swift's Comet today By Professor Barnard No Taken April exposure No Taken April exposure cs Fotografie Swiftovy komety dnes Vytvoil profesor Barnard Prvn snmek je dubna dlka expozice Druh snmek je dubna dlka expozice min gutenberg org htm Barnard PDold Comets Edward Emerson Barnard