Technical occupations in research design and development,  considered as directly supporting to engineers and physical scientists. 

 - [Washington]  1961. 
 - vi, 113 p.  23 x 12 cm. 
<br/><br/> "BES no. E-194."  "Prepared ... in cooperation with the National Science Foundation." 
<br/><br/><label>LCCN: </label>l  61000033  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technology--Vocational guidance.
<br/><br/><label>LC Class. No.: </label>TA158  / .U6 
<br/><br/><label>Dewey Class. No.: </label>658.312