Preserving and restoring monuments and historic buildings. 

 - UNESCO :  Paris,  1972. 
 - 267 p. :  ill. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Monuments --Conservation and restoration.
<br/><br/><label>Dewey Class. No.: </label>720.28  / UNP 1972