| Termen/ Term | Nr. apariții/ No. occurrences |
| THEODORESCU GEORGE | 1 |
| THEODORESCU ION SION | 1 |
| THEODORESCU ROMANATI GHEORGHE | 9 |
| THEODORESCU SION | 5 |
| THEODORESCU SION ION | 1 |
| THEODORESCU SION I. | 1 |
| THEODORESCU SION ION | 18 |
| THEODORESCU-SION ION | 278 |
| THEODORIAN ION | 3 |
| THEODOROV ARSEN. | 1 |
| THEODORU ION MANDRESCU | 1 |
| THEOHARI ION | 1 |
| THEVENARD M. | 1 |
| THIEMANN KARL | 1 |
| THIENHAUS RUDOLF | 1 |
| THIERRY | 1 |
| THIERRY FRERES | 2 |
| THIRY | 1 |
| THOM | 2 |
| THOMA HANS | 7 |
| THOMAS | 1 |
| THOMAS GERARD | 1 |
| THOMAS HANS | 1 |
| THOMAS JAN | 1 |
| THOMASSIN PHILIPPE | 2 |
| THOMASSIN S | 1 |
| THOMASSIN S. H. | 1 |
| THOMPS | 1 |
| THOMSON GEO | 1 |
| THOR WALTER | 1 |
| THORAND A | 3 |
| THORAND A. | 1 |
| THOREN OTTO VON | 1 |
| THORMA IANOS | 1 |
| THORMA IOAN | 17 |
| THORMA JANOS | 27 |
| THORMA ZANOS | 2 |
| THORMANE - KISS MARGIT | 2 |
| THORNA JANOS | 1 |
| THORNLEY G. W. | 4 |
| THORNLEY W. | 1 |
| THORSSON ELENA | 2 |
| THUILLIER PIERRE | 1 |
| THUMANN P | 2 |
| THUMANN PAUL | 6 |
| THUMLING L. | 1 |
| THURMER IOSEF | 1 |
| TIBALDI PELLEGRINO | 1 |
| TIBEICA O | 1 |
| TIBET | 1 |