Fourth five year plan 1969-74 

 -  1969 
 - 357p  cm. 
<br/><br/><label>Standard No.: </label>152959 
<br/><br/><label>Source: </label> Reports 
<br/><br/><label>Dewey Class. No.: </label>"z.2.N74<N69, K9/GD"