Category:William F. Ballhaus Sr.
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American engineer | |||||
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Date of birth | 1918 | ||||
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Date of death | 16 August 2013 | ||||
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Media in category "William F. Ballhaus Sr."
The following 2 files are in this category, out of 2 total.
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Arnold O. Beckman and William Ballhaus Sr. 1967 Feedback 2012 002 488 474299495.tiff 3,202 × 2,562, 2 pages; 23.54 MB
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William Ballhaus Sr 1967 Feedback crop 2012 002 488 474299495.tiff 883 × 1,102; 3.71 MB