La pietra e il tempo =  Stone through time. 
 Stone through time Subtitle on jacket:  Basilica di San Pietro, restauro e conservazione 

 - [Milan] :  Silvana Editoriale,  c1999. 
 - 2 v. :  ill. (some col.) ;  31 cm. 
<br/><br/> At head of title: Fabbrica di S. Pietro in Vaticano, Eni. 
<br/><br/>Includes bibliographical references. 
<br/><br/>[1] Il libro del restauro = The restoration book -- [2] Il libro fotografico = The photographic book / a cura di Alfredo Maria Pergolizzi. 
<br/><br/><label>ISBN: </label>8882152146 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Basilica di San Pietro in Vaticano.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Facades--Conservation and restoration--Italy--Rome.
<br/><br/><label>LC Class. No.: </label>NA5620.S9   / P47 1999