00303nam a2200121Ia 4500008004100000041000800041082001500049100002100064245003000085260003000115300001900145999001700164241015s9999    xx            000 0 und d  aeng  a370.72 COS  aPatrick Costello  aEffective Action Research  bContinuumaNew Yorkc2011  a132;. P. 22 cm  c41672d41672