| 1. | Etwb circular memorandum no . 1 2007 环境运输及工务局通告备忘录第1 2007号 |
| 2. | Government supplies department circular memorandum 政府物料供应处通函 |
| 3. | Circular memorandum no . 580 2000 : survey on school laboratory accidents 教育署通函第580 2000号: |
| 4. | Legal advisory and conveyancing office circular memorandum no . 56 法律谘询及田土转易处通函编号56 |
| 5. | Legal advisory and conveyancing office circular memorandum no . 57 法律谘询及田土转易处通函编号57 |
| 6. | External service regulations circular memorandum 港外服务规例 |
| 7. | Legal advisory and conveyancing office circular memorandum no . 40d 法律谘询及田土转易处通函编号40d |
| 8. | Civil service bureau circular memorandum 公务员事务局通函 |
| 9. | Land registry circular memoranda 土地注册处通函 |
| 10. | Best to follow the specification in the etwb circular memorandum no . 1 2007 环境运输及工务局通告备忘录第1 2007号 |