Engeström, Yrjo. <br/><br/>
Voices of the mind :   A sociocultural approach to mediated action. 

 - Washington, DC :   American Anthropological Association,   1992. 
 - p. 999-1000 
 - trimestral 
 - Vol.94, no.4(Dec.1992) 
 - American Anthropologist ;   vol.94, no.4 .
 - Estados Unidos.   American Anthropological Association. .
<br/><br/> Comments on: General/Theoretical anthropology.