Shepherd, Walter. <br/><br/>
Shepherd's glossary of graphic signs and symbols / 
Compiled and classified for ready reference by Walter Shepherd. 
 - London,  J. M. Dent & Sons Ltd,  1971. 
 - x, 597 pages :  illustration ;  23 cm. 
<br/><br/>Bibliography: p. 585-590. 
<br/><br/><label>ISBN: </label>0460038184 
<br/><br/><label>LCCN: </label>76864897  
<br/><br/><label>Nat. Bib. No.: </label>B71-16884 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Signs and symbols.
<br/><br/><label>Dewey Class. No.: </label>704.946