There are two aspects to the controversy over the Okinawa Trough between the States bordering the East China Sea. The scientific aspect concerns whether the Okinawa Trough disrupts the unity of the continental shelf in the East China Sea, and the legal aspect concerns whether geophysical factors...

We present estimates of 4 and 8 firm concentration ratios by industry and in weighted aggregate form for the manufacturing sector for Chinese enterprises for 2002 and 2007. These are then compared to available estimates for the same years and industrial classification for the US. These...