000 00290nam a2200109Ia 4500
008 230131s9999 xx 000 0 und d
082 _a361.3072
_bENG
100 _aEngel, R.J.
245 4 _aThe practice of research in social work
260 _aLos Angeles
_bSage Pub.
_c2009
942 _cPRCD
999 _c170432
_d170431