William Henry Leffingwell (Q3568786)
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author, automated offices 1876-1934
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | William Henry Leffingwell |
author, automated offices 1876-1934 |
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Wikipedia(2 entries)
- enwiki William Henry Leffingwell
- frwiki William Henry Leffingwell