Pelto,Pertti J.& Pelto,Gretel H. <br/><br/>
Anthropological Research:The Structure Of Inquiry. 

 -  Cambridge University Press:  1970 
 - 333 P. 24 CM. 
<br/><br/> KKUM. 
<br/><br/><label>Dewey Class. No.: </label>301.20108 PEL.