Ichon, Alain. <br/><br/>
Die grabungskampagne 1981/82 am Rio Chixoy in Guatemala. 

 - Alemania-DE :   Mexicon,   1983. 
 - 36-39 :   il.,cuads. 
 - Irregular 
 - No. 1 (Jan. 1983) 
 - Mexicon ;   no. 1  0720-5988 .
 - Alemania .   Mexicon. .