Allen, Edward Frank.  <br/><br/>
Dictionary of abbreviations and symbols / 
Edward Frank Allen. 
 - London :    Cassell,  1949. 
 - 209 p. ;  20 cm. 
<br/><br/>322  322 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Signs and symbols.<br/>Abbreviations.
<br/><br/><label>Dewey Class. No.: </label>421 / A53d