powerpoint from last lecture. Posted on November 9, 2011March 9, 2016 Facebook Twitter LinkedIn Pinterest https://docs.google.com/leaf?id=0BwMRRQXBqVxjZTVhZmRjZjUtNGU5Yi00Y2VkLWExMGQtNGMzMGY4ZWUzMDFi&hl=en_US