First Published in 1968. Routledge is an imprint of Taylor & Francis, an informa company.
- ISBN10 0674332660
- ISBN13 9780674332669
- Publish Date 5 February 1951 (first published 1 January 1951)
- Publish Status Active
- Publish Country US
- Imprint Harvard University Press
- Edition Reprint 2014 ed.
- Format Hardcover
- Pages 210
- Language English