CCITT <br/><br/>
BLUE BOOKS,VOLUME IV,FASCICLE IV.4:SPECIFICATIONS FOR MEASURING EQUIPMENT SERIES O RECOMMENDATIONS,I          Q 

 - GENEVA  ITU  1989 
 -  231 
<br/><br/> SC-021 
<br/><br/><label>ISBN: </label>ERNET 
<br/><br/><label>Dewey Class. No.: </label>1135