by Fiftieth Anniversary Colloquium, 6th, Atlanta 1971
Karl Marx
Aristotle
Joseph Conrad
![[William Wheeler Hubbell, authorized to apply for patents.]](https://covers.openlibrary.org/b/id/10200621-M.jpg)
United States. Congress. Senate. Committee on Patents
Izaak Walton
Library of Congress
![Human resources [by Theodore W. Schultz]](/assets/img/no-cover.svg)