China's pollution progress slows.
Betts
Kellyn S
KS
D000393:Air Pollutants / Q000032:analysis*; D000397:Air Pollution / Q000517:prevention & control*; D002681:China; D002947:Cities; D003031:Coal; D004777:Environment; D004784:Environmental Monitoring; D011210:Power Plants
D000393:Air Pollutants; D003031:Coal