: AbellRichnessClasshttp://www.astro.umd.edu/~eshaya/astro-onto/owl/astronomy.owl# Create a prefix for http://www.astro.umd.edu/~eshaya/astro-onto/owl/astronomy.owl# Hit Enter to save Double click to create a prefix | rdfs:subClassOf | : particleDensityhttp://www.astro.umd.edu/~eshaya/astro-onto/owl/physics.owl# Create a prefix for http://www.astro.umd.edu/~eshaya/astro-onto/owl/physics.owl# Hit Enter to save Double click to create a prefix |