British standards institution <br/><br/>
British standard bevel gears (machine cut) 

 - London  British standard institution  1949 
 - 36 p.  illus. 
<br/><br/>
<br/><br/><label>Subjects--Topical Terms: </label><br/>MCE
<br/><br/><label>Dewey Class. No.: </label>621.7665  / BRI