http://expertvoices.nsdl.org/chemeddl/2009/06/13/books-books-and-more-books-july-2009/ Opinions from the PI of ChemEd DL; Editorials, Especially for High School Teachers, and other material from the Journal of Chemical Education Sun, 22 Nov 2009 08:18:14 +0000 http://wordpress.org/?v=2.3.3