Educational technical training requiremnts of production procees workers in the plastic industry 

 -  1961 
 - 31p  cm. 
<br/><br/><label>Standard No.: </label>151704 
<br/><br/><label>Source: </label> Reports 
<br/><br/><label>Dewey Class. No.: </label>"X9(F52):99T.2, K1/GD"