00317nam a2200121Ia 4500008004100000041000800041082001200049100002000061245004500081260004400126300001300170365001200183240624s9999    xx            000 0 und d  aeng  a306 ALF  aALFORD ROBERT R  aCRAFT OF INQUIRY THEORIES METHODS EVIDEN  c1998aNew YorkbOxford University Press  a176 : p.  cGBPb29