Category:Engineering Magazine, 1916

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Media in category "Engineering Magazine, 1916"

The following 3 files are in this category, out of 3 total.

Andrew L Riker.JPG 313 × 526; 25 KB
Harrington Emerson.jpg 538 × 681; 41 KB
Henry L. Gantt.jpg 550 × 688; 114 KB

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