RT Book T1 The Essential Supports for School Improvement A1 Sebring, Penny Bender A2 Luppescu, Stuart A2 Easton, John Q. A2 Bryk, Anthony S. A2 Allensworth, Elaine LA English PP Erscheinungsort nicht ermittelbar PB Consortium on Chicago School Research (CCSR) YR 2006 UL https://krimdok.uni-tuebingen.de/Record/1912540045