http://iis-db.stanford.edu/pubs/23071/NTP_TeacherGuide.pdf
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Apr 5, 2009 – Henry A. Kissinger, and former U.S. Senator Sam Nunn. .... supplementary curriculum materials that SPICE produces help to make the research of ... In his article, “Teaching for Critical ..... enriched to very high levels (see “highly enriched uranium” ... “weapons-grade” at enrichment levels of 90 percent
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