The international telecommunication union <br/><br/>
Instructions for the international telephone service / 

 - The international telecommunication union  Geneva  1965 
 - 119 p  illus  24 cm 
<br/><br/>Application of the Instructions (Page-5), General (Page-7), Advance Preparation Operating (Page-54), Semi-Preparation Operating (Page-73), Demand Working (Page-75),Automatic Operating (Page-100). 
<br/><br/><label>Subjects--Personal Names: </label><br/>The international telecommunication union
<br/><br/><label>Subjects--Topical Terms: </label><br/>Instructions for the international telephone service
<br/><br/><label>Dewey Class. No.: </label>621.385,INS