| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Canton Union of steel sampling software GGJ10 .0 training tutorial | 978-7-114-07120-1 (7-114-07120-5) | 1991 |
| Canton Union of the amount of graphics software GCL8.0 Operator Training Course | 978-7-114-07118-8 (7-114-07118-3) | 1991 |