Ayres, R. U. <br/><br/>
Technology, energy and materials 

 -  Erasmus University  1998 
 - 18p.  ill.  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology and state
<br/><br/><label>LC Class. No.: </label>PAM TD785.D54