Quality of timber. 

 - London :    British Standards Institution,    1952. 
 - 23 p. :    ill. ;    21 cm. 
<br/><br/>  British Standard 1186 : Part 1: 1952 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Softwood.<br/> Joinery -- Great Britain.<br/> Wood -- Standards -- Great Britain.