Reti, Ladislao. <br/><br/>
The unknown Leonardo / 
edited by Ladislao Reti ; designed by Emil M. B�uhrer. 
 - London :  Hutchinson,  1974. 
 - 319 p. :  ill. (some col.), facsims., maps (chiefly col.), ports. 
<br/><br/><label>ISBN: </label>009120660X  
<br/><br/><label>Subjects--Personal Names: </label><br/>Leonardo, da Vinci,  1452-1519 
<br/><br/><label>Subjects--Corporate Names: </label><br/>Madrid. Biblioteca Nacional. --MSS. (8936-8937)