1.
|
Washington, D.C. : Brookings Institution Press, 2010.
|
2.
|
New York : Nova Science Publishers, c2009.
|
3.
|
Cambridge, Mass. : MIT Press, c2007.
|
4.
|
Washington, D.C. : The National Academies Press, c2008.
|
5.
|
Washington, D.C. : Brookings Institution Press, 2010.
|
6.
|
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2010.
|
7.
|
Washington : U.S. G.P.O. : For sale by the Supt. of Doc, U.S. G.P.O., [Congressional Sales Office], 2001.
Y 4.EN 2: S.HRG.107-189 |
|
8.
|
[Washington, D.C.? : National Science Foundation] ; Cambridge ; New York : Cambridge University Press, 2001.
|
9.
|
Washington : U.S. G.P.O. : For sale by the U.S. G.P.O., Supt. of Docs., Congressional Sales Office, 1999.
Y 4.EN 2: S.HRG. 106-227 |
|
10.
|
New York : Nova Science Publishers, 2010.
|