Manipulation, modification and control properties. 

 - Londres-ENK :   International Institute for Conservation,   1971. 
 - páginas 105-106 
 - Irregular 
 - Vol. 8, no. 4(Dec.1970-1971) 
 - Art and archaeology technical abstracts ;   Vol. 8, no. 4(Dec.1970-1971) .
<br/><br/> Other natural ans synthetic organic materials.  Publicación semi anual. 
<br/><br/><br/>Inglés.