00483nam a2200157Ia 450000500170000000800460001703700120006304000210007504100130009608400210010924500370013024500440016726000710021130000120028254600310029420250508161459.0008  250505s9999    xx            000 0 eng d  aTextual  aFEDL bengcFEDL  aeng2eng  a375.3, NATqFEDL 0aTeaching of contemporary affairs 0cNational Council for the Social studies  aWashington, USAbThe National Council for the Social Studiesc1951  axi,233p  a1950 Twenty-first yearbook