00474nam a2200193Ia 4500008004100000082001100041082001100052100002000063100001100083245003200094250001200126260001500138260002500153260000900178300001500187365002500202650002500227650002800252150909s9999    xx            000 0 und d  a300.18  bBAB/PR  aBabbie Earl R    eAuthor  aPractice of social research  a2nd Ed.  aCalifornia  bWadsworth Publishers  c1979  a596  Pages  aUSD.18.15             aResearch methodology  aSocial science research