- Her Majesty's Stationery Office  London  1972 
 - 44p.  ILL.,Cht.,Fig and Table 
<br/><br/><label>ISBN: </label>0-11-670503-5 
<br/><br/><label>Nat. Bib. No.: </label>4451 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Building and Construction
<br/><br/><label>Universal Decimal Class. No.: </label>693.3  / GUI