Halacy, Daniel Stephen  1919 <br/><br/>
9 roads to tomorrow  : 

 - [New York] :   MacFadden-Bartell,   [c1966]. 
 - 127 páginas :   il., dib. 
<br/><br/> Adapted by Ralph K. Andrist 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TECNOLOGIA<br/>INGENIERIA