IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This is a single model rocket motor.
Winter, Frank H. 1999. "The Influence of the von Opel-Valier Experiments Upon German Rocket Propelled Model Aircraft Development, 1920's–1930's." Journal of the British Interplanetary Society, 52, (7) ...
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