| Termen/ Term | Nr. apariții/ No. occurrences |
| RETHY | 1 |
| RETHY KAROLY | 1 |
| RETI ISTVAN | 2 |
| RETI STEFAN | 3 |
| RETTALBINA | 1 |
| RETTICH K. | 1 |
| RETTICH KARL | 2 |
| RETTUCI C. | 1 |
| RETZSCH FR. MORITZ AUGUST | 2 |
| RETZSCH FR. MORITZ AUGUST (DEL.) | 2 |
| RETZSCH FRIEDRICH MORITZ AUGUST | 1 |
| REUTLINGEN | 3 |
| REVESZ KAROLY | 1 |
| REVESZ KORNEL | 1 |
| REVICH | 1 |
| REY I. | 8 |
| REYMERSWAELE MARINUS VAN | 1 |
| REYMOND CARLOS | 1 |
| REYNOLDS JOSHUA | 3 |
| REZNICEK | 1 |
| REZORI | 3 |
| REZORI HUGO VON | 5 |
| RFAEL SANZIO | 1 |
| RHOMBERG H. | 1 |
| RHOON | 1 |
| RIAMENTOVSKI P. | 2 |
| RIBARIU PAULA | 16 |
| RIBARIU PAULINA | 1 |
| RIBARZ RUDOLF | 1 |
| RIBAT THEODULE | 2 |
| RIBEIRO DE | 1 |
| RIBERA | 1 |
| RIBERA GIUSEPPE | 1 |
| RIBERA IOSEF | 1 |
| RIBOT TH. | 1 |
| RIBOT THEODULE | 2 |
| RIBOT THEODULE-AUGUSTIN | 6 |
| RICARD LOUIS-GUSTAVE | 6 |
| RICARDO FLORES | 1 |
| RICCI MARCO | 1 |
| RICCI SEBASTIANO | 2 |
| RICCIANI ANTONIO | 1 |
| RICCIARELLI | 1 |
| RICCIARELLI DANIELE NUMIT DANIELE DA | 2 |
| RICCIOLINI NICCOLO | 1 |
| RICH | 1 |
| RICHARDS T.WILLIAM | 1 |
| RICHMOND GEORGE | 1 |
| RICHTE J (SC) | 1 |
| RICHTER | 1 |