00265nam a2200097Ia 4500008004100000082001600041100002000057245003600077260004100113300001300154190415s9999    xx            000 0 und d  a300.1 SJO-;  aSjoberg, Gideon 0aMethodology for social research  aNew YorkbHarper & Row Publishersc0  ax, 355p.