Penna, C.V. <br/><br/>
The planning of library and documentation services 

 - Paris :  Unesco,  1967. 
 - 158p.;  21cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library Science
<br/><br/><label>Dewey Class. No.: </label>025  / PEN