BIFF! BAM! POW! Dynamic duo anchor Atlanta graphic novels panel - When Spring Book Show 2008, the South’s largest bargain book show, comes to Atlanta’s World Congress Center on March 28-30, writers, inkers and fans of graphic novels will be treated to the wisdom of two of the nation’s top experts on the booming genre. For those unfamiliar with the genre, graphic novel sales have exploded from $43 million in 2001 to $330 million in 2006. The panelists are John Shableski of Diamond Book Distributors of Timonium, Md., and Chris Staros, the award-winning CEO of graphic novel publisher Top Shelf Productions of Marietta, Ga. They are among 18 presenters at three seminars open to the general public being held in conjunction with the Spring Book Show.