| English | eng-000 |
| ETL | |
| Deutsch | deu-000 | ETL |
| English | eng-000 | Electro-technical Laboratories |
| English | eng-000 | economical trait loci |
| English | eng-000 | emitter transistor logic |
| suomi | fin-000 | ETL |
| suomi | fin-000 | ekonomisten ominaisuuksien lokukset |
| 日本語 | jpn-000 | ETL |
| 日本語 | jpn-000 | 電総研 |
| español | spa-000 | ETL |