Baer, N. S. <br/><br/>
Art and archaeology technical abstracts   ;   Vol. 9, no. 2 

 - Londres-ENK :   International Institute for Conservation,   1972. 
 - páginas 159-295 
 - Irregular 
 - Vol. 9, no. 2(1972) 
 - Art and archaeology technical abstracts   ;   Vol. 9, no. 2 .
<br/><br/> Suplemento.