Shanghai Foreign Economic Relations and Trade Annals GuangDong foreign economic relations & trade 50 years Yearbook of Shanghai foreign economic relations and trade 1997 Yearbook of Shanghai foreign economic relations and trade 1999 Practice in foreign economic relations and trade China foreign economic relations and trade theory & policy Guangzhou foreign economic relations & trade annual report 1996 Guangzhou foreign economic relations & trade annual report 1998 Guangzhou foreign economic relations & trade annual report 1999 Guangzhou foreign economic relations & trade annual report 2000