Authors: Ro
- Fremantle, E. R. Sir 1836-1929 1 book
- Humphries, Rolfe 1894-1969 1 book
- Hale, Beatrice Forbes-Robertson 1883-1967 1 book
- Fulton, Robert I. (Robert Irving) 1855-1916 1 book
- Childers, Robert Cæsar 1838-1876 1 book
- Trucksess, Robert - 1 book
- Rohner, Gerold K. - 1 book
- Romagnoli, Ettore 1871-1938 1 book
- Gregory, William Robert 1881-1918 1 book
- Mendel, Rosalie G. - 1 book
- Rolfe, Henry Winchester 1858- 1 book
- Rose, C. A. - 1 book
- Rossi, Paul A. 1929- 1 book
- Guffey, George Robert 1932- 1 book
- Roguet, Christophe-Michel, comte 1800-1877 1 book
- Dareste, Rodolphe 1824-1911 1 book
- Robertson, A. Fraser - 1 book
- Holloway, Robert - 1 book
- Genin, Robert 1884-1943 1 book
- Ogilvie-Grant, W. R. (William Robert) 1863-1924 1 book
- Robins, William - 1 book
- Creswell, R. J. (Robert J.) 1844-1906 1 book
- Robinson, Arthur William 1856-1928 1 book
- Havell, Robert 1793-1878 1 book
- Mills, Thomas Ross 1869- 1 book
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