Arabische Philosophie und Wissenschaft in der Enzyklopوadie / 
von Susanne Diwald. 
 - Wiesbaden :  O. Harrassowitz,  1975 
 - v. ;  25 cm. 
<br/><br/> Includes indexes.  At head of title: Akademie der Wissenschaften und der Literatur, Mainz.  German translation of the al-Rasa'il with accompanying commentary. 
<br/><br/>Bibliography: v. 3, p. [557]-592. 
<br/><br/>3. Kitab I”hwan asْ-sْafa., Die Lehre von Seele und Intellekt. 
<br/><br/><label>ISBN: </label>3447015721 (v. 3) 
<br/><br/><label>LCCN: </label>76-464209 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy, Islamic--Early works to 1800
<br/><br/><label>LC Class. No.: </label>B746.A4