This　paper　addresses　cooperative　global　robust　output　regulation　for　heterogeneous　and　uncertain　multiagent　nonlinear　systems　in　the　output-feedback　normal　form.　Specifically,　we　develop　a　Lyapunov-based　dynamic　output-feedback　law　using　a　nonlinear　internal　model　approach.　We　show　that　an　effective　control　law　can　be　constructed　under　general　(static)　directed　communication　topologies　even　when　the　leader　is　unknown.　Hence,　the　present　study　offers　a　more　general　investigation　of　the　problem　in　comparison　with　the　developments　in　the　recent　literature.