Preservation of library materials:   Conference held at the national library of Austria, Vienna, April 7-10, 1986 
/ Conference of Directors of National Libraries in Cooperation with IFLA and UNESCO 
 - London:   K.G. Saur,   1987 
 - vi, 155p. 
 - IFLA publication  41 .
<br/><br/> Vol. 2 
<br/><br/><label>ISBN: </label>3598217714 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science
<br/><br/><label>Subjects--Index Terms: </label>Library materials 
<br/><br/><label>Universal Decimal Class. No.: </label>D 025.7/.9(082.2)  / M7.2