. _:vb50820795 . _:vb50820792 "Silvia Pfeiffer" . _:vb50820793 "Erika Doyle Navara" . _:vb50820794 . _:vb50820791 "Travis Leithead" . _:vb50820793 . _:vb50820794 . _:vb50820792 . "HTML5: Edition for Web Authors" . _:vb50820792 . . _:vb50820793 . _:vb50820790 . . "2013-05-28" . _:vb50820791 . _:vb50820791 . . _:vb50820790 . _:vb50820794 "Theresa O'Connor" . _:vb50820790 "Robin Berjon" . _:vb50820795 . _:vb50820795 .