Keywords: Zethrene-3D-balls.png Ball-and-stick model of the zethrene molecule a polycyclic aromatic hydrocarbon Derived from File Benzene-aromatic-3D-balls png and File Benzene-non-aromatic-3D-balls png 2010-10-03 Jynto and Ben Mills Polycyclic aromatic hydrocarbons Images by Jynto |