![]() |
| |||
| primary sources (Published and unpublished records without secondary interpretation or commentary) | |||
| original sources; primary literature | |||
| |||
| primary radiator | |||
| aerial feed; antenna feed | |||
|
sources primaires : 8 צירופים, 4 נושאים |
| כספים | 1 |
| מדעי כדור הארץ | 2 |
| תעשיית האנרגיה | 2 |
| תקשורת | 3 |