TY  - BOOK
AU  - Friedrichs, Jurgen
AU  - Ludtke, Harmut jt.au.
TI  - Participant observation
SN  - 347010490
CY  - Westmead
KW  - Participant observation
KW  - Participating research
KW  - Social sciences - field work
KW  - Social sciences research
KW  - Socialogical research
ER  -