Code of practice for cleaning and surface repair of buildings.  Part1,  natural stone, cast stone and clay and calcium silicate brick masonry / 
British Standards Institution. 
 - 27 pages :  illustrations ;  32cm. 
 - British standard ;  BS 6270 : Part 1 : 1982 .
 - British standard ;  BS 6270 : Part 1 : 1982 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Buildings--Repair and reconstruction.<br/>Buildings--Maintenance.