Robert D. Cook ... [et al.]. Robert D.Cook ... [et al. Robert J. Moore ... [et al.] Robert C. Carson ... [et al.]. Robert L. Pecsok ... [et al.]. Robert N. Corley ... [et al.]. Robert H. Frank ... [et al. Robert J. Chaskin ... [et al.] Robert W Fox ... [et al]. Robert B. Donald ... [et al.]