Graphical symbols for power generating plant.   Part 2,  graphical symbols for general engineering / 
British Standards Institution. 
 - London :  British Standard Institution,  1950. 
 - 17 p. ;  22 cm. 
 - British standard ;  BS 1553 : Part 2 : 1950 .
 - British standard ;  BS 1553 : Part 2 : 1950  .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric engineering--Notation.<br/>Engineering--Graphic methods.