00265nam a2200097Ia 4500008004100000082001600041100001600057245005000073260003000123300001400153191014s9999    xx            000 0 und d  a300.72bBAB  aEarl Babbie 4aThe Practice of Social Research (9th Edition)  aAstraliabWadsworthc2001  aXxiii,498