Ulmer, Gregory L., <br/><br/>
Heuretics :  the logic of invention / 

 - Baltimore   John Hopkins University Press,  1994. 
 - xiii, 267 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0801847176  0801847184  
<br/><br/><label>LC Class. No.: </label>BH301.C84  / U5 1994