Specification for masonry units :  aggregate concrete masonry units (dense and lightweight aggregates) / 

 -  The British Standards Institution  2015 
 - 46p. 
<br/><br/><label>ISBN: </label>9780580794957 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Masonry standards<br/>Concrete construction standerd
<br/><br/><label>Dewey Class. No.: </label>693.1  / SPE