Friedrichs, Jurgen u <br/><br/>
Participant observation :  theory and practive / 
by Jurgen Friedrichs and Hartmut Ludtke; translated from the German by Nancy Derr and Alice Gallasch. 
 - Farnborough, Hants. :  Saxon House,  1975. 
 - xii, 257 p. :  ill. ;  24 cm. 
<br/><br/> Translation of Teilnehmende Beobachtung.  Includes index. 
<br/><br/>p. 239-252. 
<br/><br/><label>ISBN: </label>0347010490 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Participant observation<br/>Sociology<br/>Anthropology