00515nam a2200157Ia 450000500170000000800460001703700290006304000210009204100130011308400260012610000240015224501010017625000170027726000470029430000160034120250508150817.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDL bengcFEDL  aeng2eng  a370.7803, ENC/OqFEDL  aMonroe Walter S Ed. 0aEncyclopedia of educational research: A project of the American educational research association  aRev. edition  aNew York, USAbThe Macmillan Companyc1950  axxvi,1520p.