00454nam a2200157Ia 450000500170000000800460001703700290006304000200009204100130011208400250012510000220015024500330017226000450020530000090025049000370025920250508151714.0008  250505s9999    xx            000 0 eng d  aBooks to be hide in OPAC  aFEDLbengcFEDL  aeng2eng  a300.973, UNI/OqFEDL  aTroelstrup Arch W 0aHousing in the United States  aColumbus,USAb Charles E Merrill Company  a32p.  aText units in the social studies