Mathematics teaching in the middle school /
National Council of Teachers of Mathematics.

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Item Link Original Source
Limited (search only)   v.1 1994-1996 University of Michigan
Limited (search only)   v.10:no.1-9(2004-2005) University of Michigan
Limited (search only)   v.13 Aug.2007-Jan.2008 Pennsylvania State University
Limited (search only)   v.13 Feb-May 2008 Pennsylvania State University
Limited (search only)   v.14 Aug.2008-Jan.2009 Pennsylvania State University
Limited (search only)   v.14 Feb-May 2009 Pennsylvania State University
Limited (search only)   v.15 Aug.2009-May 2010 Pennsylvania State University