| 1. | " footprints in wetland " seminar and workshop - circular 湿地足迹研讨会及工作坊通函 |
| 2. | Government supplies department circular memorandum 政府物料供应处通函 |
| 3. | Block extension letter forms for applications for block extension 整批延期提交报税表的通函 |
| 4. | Highways department technical circular hyd tc 7 2006 路政署科技通函hyd tc 7 2006只供英文版 |
| 5. | Highways department technical circular hyd tc 1 2007 路政署科技通函hyd tc 1 2007只供英文版 |
| 6. | Highways department technical circular hyd tc 10 2006 路政署科技通函hyd tc 10 2006只供英文版 |
| 7. | Highways department technical circular hyd tc 11 2006 路政署科技通函hyd tc 11 2006只供英文版 |
| 8. | Notice , general circular and circular memo -公告、一般通告及通函 |
| 9. | Circular memorandum no . 580 2000 : survey on school laboratory accidents 教育署通函第580 2000号: |