00362nam a2200133Ia 4500008004100000020001800041040003800059100001700097245003200114250000800146260002900154300001500183653003000198211231s9999    xx            000 0 und d  a0-534-18744-7  cJayakar Knowledge Resource Centre  aBabbie, Earl 0aPractice of social research  a7th  bWadsworthaBelmontc1994  amixed p p.  aSocial Science - Research