Hurtado de Mendoza, Luis Augusto. <br/><br/>
Obsidian studies and the archaeology of the valley of Guatemala  [microform] / 
by Luis Augusto Hurtado de Mendoza. 
 - Ann Arbor, Mich. :  University Microfilms International,  1978. 
 - 2 microfiches :  vi, 147p. ,diagrs., plans, tables. 
<br/><br/> Thesis (Ph.D.): Pennsylvania State University, Department of Anthropology, 1977. - Bibl.: p. 126-135. - Deals with the precolumbian chiefdoms of Kaminaljuyu, Amatitlan and Chimaltenango.