Engineering Seminar on New Ind <br/><br/>
Laser technology  welding, machining and saftey 15 papers presented at the engineering seminar on New industrial technology July 7-9 1969 at Penn State Univ. 

 -  Engg. Pub.  1970 
<br/><br/><label>Dewey Class. No.: </label>621.36606  / N70