创造者
- Robert L Jordon1
- Robert L Titus1
- Robert M Daley1
- Robert M Howard1
- Robert M Jack1
- Robert M Thompson1
- Robert Mark Harris1
- Robert P Reimer1
- Robert T Milsom1
- Robert W Fischer1
- Robert W Samsel1
- Roberta S Poorman1
- Rodger D Woodworth1
- Roger G Valci1
- Roger M Raymer1
- Roger P Felipe1
- Ronald A Ruthruff1
- Ronald E Zook1
- Ronald N Cousineau1
- Ronald N Leasure1