described at URL: https://images.nasa.gov/details/GRC-1955-C-37787 URL: http://images-assets.nasa.gov/image/GRC-1955-C-37787/GRC-1955-C-37787~orig.jpg determination...
English The Engine Propeller Research Building, referred to as the Prop House, emits steam from its acoustic silencers at the National Advisory Committee...
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