Hampshire, Barry. <br/><br/>
Working with braille : a study of braille as a medium of communication/ by Barry Hampshire. 

 - Paris : UNESCO, 1981. 
 - 177 p.; 24 cm. il., retrs., lamns. 
<br/><br/><label>ISBN: </label>9231018647. 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>003.24 (100) =20 HAM.