The Collapse of Complex Societies
Joseph A. Tainter
New Studies in Archaeology (1)
The Switch
Joseph Finder
Data Manipulation With R - Second Edition
Jaynal Abedin & Kishor Kumar Das
End the Fed
Ron Paul
Researcher's Guide to International Space Station Earth Observations
Lisa A. Vanderbloemen & William Louis Stefanov & Cynthia Ann Evans & United States. National Aeronautics & Space Administration