Robert E. Quinn ... [et al.] by Robert M. Jarvis ... [et al.] Robert A. Heineman ... [et al.] Robert L. Pecsok ... [et al.]. by Robert M. Johnston ... [et al.]. Robert A. Szymanski ... [et al.] Robert Jurmain ... [et al.] Robert G. Murdick ... [et al.]. James West Davidson ... [et. al.] Robert A. Szymanski ... [et al.].