However, the only important variation in demographic traits among the the pre-implementation and submit-implementation study samples was in the proportion of workers with a significant college diploma or typical equivalency diploma as their best level of education (pre-implementation vs twelve months post-implementation).
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White House Tapes-Presidential Recordings Program, Miller Center of Public Affairs, University of Virginia. Levine, Future of the US Space Program, p. Selverstone, Marc. "JFK and the Space Race". Trachtenberg, Marc (February 8, 1999). A Constructed Peace: The Making of the European Settlement, 1945-1963. Princeton University Press. Sherkat, Darren E. Ellison, Christopher G. (August 1999).