(美)Robert A.O'Rourke ...[等]著 (美)Robert A.O' Rourke等著 (美)Robert A. Young著 (美)Robert J.Oberg等著 (美)Robert A. Davis著 (美)Robert A.Pease著 (美)Robert B.Hickey著 (美)Robert C.Rosaler主编 (美)Robert F.Pierret著 (美)Robert G.Freeman著