Income mobility and the U.S. economy : open society or caste system?

"January 1992."

The French Revolution of 1848 in its economic aspect: vol. I, Louis Blanc's Organisation du travail, vol. II. Émile Thomas's Histoire des ateliers nationaux;

List of books: vol. I, p. [xcviii]-xcix.

Assessment of satellite transit system (STS) at the Seattle-Tacoma International Airport : final report /

Mode of access: Internet.

Roosevelt Island Tramway System assessment /

Mode of access: Internet.

The grain tribute system of China, 1845-1911.

"Written as a doctoral dissertation at Harvard University in 1949-50."