00388nam a2200133Ia 450000500170000000800410001702000150005804000100007305000170008310000210010024500680012126000370018965000280022620251229190450.0251229s9999    xx            000 0 und d  a0387902651  cEULIB  aLB 2846 .K87  aKurtz, Albert K. 0aStatistical methods in education and psychologycAlbert K Kurtz  aNew Yorkb Springer-Verlagc1979  aEducational Statistics?