Science and Engineering Indicators 2006 /  Volume 1. 
National Science Foundation. 
 - Virginia :  2006. 
 - Var p. : ill.  30cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science & Engineering - Indications.
<br/><br/><label>Dewey Class. No.: </label>2006