"Swedish 80Kv System, Stock trolon"   Swedish state Power Board 

 -  1960 
 - 352p.  cm. 
<br/><br/><label>Standard No.: </label>169466 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X9 (D66). 571, K0"