Valves, gauges and other safety fittings for land boiler installations, BS:759:1950 

 - London  by British Standards Institution  1950 
 - 23p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Boiler Safety
<br/><br/><label>Dewey Class. No.: </label>621.184  / B9169