Degarmo, E. Paul. <br/><br/>
Engineering economy / 
E. Paul Degarmo. 
 - [S.l.] :  Macmillan,  1993. 
 - 1 v. (unpaged) 
 - Ninth edition. .
 - Ninth edition. .
<br/><br/> Technical info on developing a product or service. The application of technical and economic analysis, with the goal of deciding which course of action best meets performance criteria.