The conservation of cities / 
Unesco 
 - London :  Croom Helm,  1975 
 - 186 p. ;  23 cm. 
<br/><br/><label>ISBN: </label>0856642406 
<br/><br/><label>LCCN: </label>75-316479 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Architecture--Conservation and restoration--Addresses, essays, lectures<br/>City planning--Addresses, essays, lectures