Maturana, Humberto R. <br/><br/>
The Tree of knowledge  the biological roots of human understanding /  [Texte imprimé] : 
Humberto R. Maturana and Francisco J. Varela ; foreword by J. Z. Young 
 - Boston:  New Science Library,  1987 
<br/><br/><label>ISBN: </label>0-87773-373-2 
<br/><br/><label>Dewey Class. No.: </label>612