1.
2.
[Hong Kong, China] : [China Patents & Trademarks Publications], 1991.
English | 7 CN |
3.
4.
5.
London [England] : Euromoney Institutional Investor PLC, 1992.
English | G 62(254) GB 72 |
6.
7.
[Hong Kong, China] : [China Patents & Trademarks Publications], 1986.
English | 7 CN |
8.