Rothenberg, Jeff. <br/><br/>
Prototyping as modeling :  What is being modeled? / 
jeff Rothenberg ; prepared for the Defense Advanced Research Projects Agency. 
 - California :  Rand Corporation,  1990. 
 - 20 p. ;  28 cm. 
 - A Rand note ;  N-3191-DARPA .
 - Rand note ;  N-3191-DARPA. .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label> Hadiah