Non-fiction writers active during the 20th century, when their works were written/first published, whether their births were in the 19th or 20th centuries, or their deaths were in the 20th or 21st centuries.
This category has the following 7 subcategories, out of 7 total.
The following 200 pages are in this category, out of approximately 474 total. This list may not reflect recent changes.
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