U.S. library of congress information bulletin. 

 - Washington, D.C :  Library of Congress. 
 - Irregular. 
 - v.34-44(1)19985, v.45(1-57)1986, v.46(1-14,40)1987 
<br/><br/><label>ISSN: </label>0041-7904 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library publications -- United states.--Library publications -- United states.
<br/><br/><label>LC Class. No.: </label>Z733.U5J1L5.A5