Guide to macroscopic examination of steel by etching with strong mineral acids / 
British Standards Institution. 
 - 4 pages ;  33cm. 
 - British standard ;  BS 6533 : 1984 .
 - British standard ;  BS 6533 : 1984 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Inorganic acids.<br/>Metallography--Great Britain.<br/>Steel--Metallography.