(美)Robert P. Reiser[等]著 (美)Robert A. Heinlein著 (美) Robert P. Crease著 (美)Robert C. Seacord著 (美)Roberta G. Steinberg著 (美)Robert D. Grace著 (美)Robert D. Hill著 (美)Robert Fisher著 (美)Robert H.Bishop著 (美)Robert K. Jackler著