Authors: e
- Roscoe, Margaret -1840
- Rosebery, Archibald Philip Primrose, Earl of 1847-1929
- Rose, Elise Whitlock -
- Rosen, Erwin 1876-1923
- Roskruge, Ethel -
- Rosmer, Ernst 1866-1949
- Rosny, J.-H., aîné 1856-1940
- Ross, Charles H. (Charles Henry) -1897
- Ross, E. Denison (Edward Denison), Sir 1871-1940
- Ross, Edmund G. (Edmund Gibson) 1826-1907
- Ross, Edward Alsworth 1866-1951
- Rossetti, Christina Georgina 1830-1894
- Rossi, Emanuele -
- Ross, J. Elliot (John Elliot) 1884-1946
- Rostand, Edmond 1868-1918
- Rothamsted Experimental Station -
- Roth, Edward 1826-1911
- Rothery, Agnes 1888-1954
- Roth, Eugen 1895-1976
- Roundell, Charles, Mrs. -
- Rout, Ettie Annie 1877-1936
- Routledge, Edmund 1843-1899
- Rowe, John G. (John Gabriel) 1874-1956
- Rowe, Richard 1828-1879
- Rowlands, Effie Adelaide 1866-1936
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