Posnansky, Arthur,  <br/><br/>
Ceramics as evidence of a prehistoric tie among american peoples :  The genesis of ceramics and the ideographic sings which cover them. 

 - La Paz-BO   Universo   1945. 
 - p. 94-106 
 - Irregular 
 - Año LVI, no. 68 (Dic. 1945) 
 - Boletín de la Sociedad Geográfica de La Paz ;   no. 68 .
 -   Sociedad Geogr fica de La Paz.   .