By Norman, Robert A.
By Heinlein, Robert A.
By Pape, Robert A.
By Jarrow, Robert A.
By Haugen, Robert A.
By Hatcher, Robert A., etc.
By Dodgshon, Robert A., Butlin, Robin A.
By Wallace, Robert A., etc., Sanders, Gerald P., Ferl, Robert
By Pashin, Jack C., Gastaldo, Robert A.
By Bates, Barbara, Hoekelman, Robert A., Thompson, Joyce E.
By Hyde, Richard M., Patnode, Robert A.
By Evans, Robert A., Parker, Thomas D.
By Bates, Barbara, Hoekelman, Robert A.
By Pearce, Robert A., Stevens, John
By Day, Robert A., Gastel, Barbara
By Brown, Robert A.
By Fudge, Edward William, Peterson, Robert A.
By Crampsey, Robert A.
By Monroe, Robert A.
By Gillies, Robert A.
By Laidlaw, Robert A.
By Adams, Robert A.
By Johnson, Robert A.