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Keywords from Image Description:
Three pigeons with cameras. en Dr Julius Neubronner patented miniature pigeon camera activated by timing mechanism cs Holubi vybaven fotoaparty vpravo kamera jednm objektivem uprosted se dvma objektivy vlevo kamera panoramatick Dr Julius Neubronner patentoval lehkou holub kameru kter se spoutla asovm mechanismem Dr Julius Neubronner