| Author | Titles | | 1.
| Ramsden, Mel, 1944- | 2 | | 2.
| Ramseger, Georg | 1 | | 3.
| Ramseier, Jürg | 1 | | 4.
| Ramsey, L. G. G. | 3 | | 5.
| Ramualdo, Carlos | 2 | | 6.
| Ramus, Charles F. | 1 | | 7.
| Ramus, Roger | 1 | | 8.
| Ramusga, Emilia | 1 | | 9.
| Ramusio, Gian Battista, 1485-1557 | 0 | | 10.
| Author is: Ramusio, Giovanni Battista, 1485-1557 | 2 | | 11.
| Ramusio, Giovanni Battista, 1485-1557 | 2 |
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