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February 2007 SCD Article February 2007 SCD Article The cover from the 2-2-07 SCD 54173855 Image from the table of contents 54173856 Top half of the SCD article 54173857 Bottom half of the SCD article 54173858 Column 1 from the SCD article 54173859 Column 2 from the SCD article 54173860 Column 3 from the SCD article 54173861 Page 3 from the SCD article 54173862 Cropped image from page 2 54173863