What is a virus?
| Field | Ind | Field content |
| leader | -----nam-a22------a-4500 | |
| 1 | kpw541403090 | |
| 3 | CZ-ZlKKF | |
| 5 | 20210625150249.9 | |
| 130 | #0 | $a What is a virus? |
| Field | Ind | Field content |
| leader | -----nam-a22------a-4500 | |
| 1 | kpw541403090 | |
| 3 | CZ-ZlKKF | |
| 5 | 20210625150249.9 | |
| 130 | #0 | $a What is a virus? |