 |
| Angielski tezaurus | |||
| |||
| Rest 0 | |||
| Null (Pertaining to a value that indicates missing or unknown data); NULL (Pertaining to a value that indicates missing or unknown data) | |||
| |||
| null (Pertaining to a value that indicates missing or unknown data) | |||
|
null : 27 do fraz, 10 tematyki |
| Anteny i falowody | 3 |
| Chemia | 2 |
| Chemia analityczna | 4 |
| Elektronika | 2 |
| Matematyka | 6 |
| Microsoftu | 6 |
| Nauki o życiu | 1 |
| Pospolicie | 1 |
| Technika i technologia | 1 |
| Telegrafia | 1 |