00431nam a2200145Ia 450000500170000000800460001703700290006304000210009204100130011308400210012624500400014726000570018730000130024449000280025720250508153359.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDL bengcFEDL  aeng2eng  a370, ACE/OqFEDL 0aReading ladders for human relations  aWashington, USAbAmerican Council on Educationc1947  aviii,67p  aWork in progress series