00252nam a2200109Ia 4500008004100000020001800041082001400059100001000073245002900083260000900112500002100121260604s9999    xx            000 0 und d  a9781412951456  a001.4 CLA  aCLARK 0aTHE MIXED METHODS READER  bSAGE  aResearch, Reader