TY - BOOK AU - Kahn Matthew E AU - Li, Pei AU - Zhao, Daxuan ED - National Bureau of Economic Research TI - Pollution control effort at China’s river borders: When does free riding cease? T2 - NBER Working Paper PY - 2013/// CY - Cambridge PB - NBER KW - NBERWP 19620 KW - E10773.pdf UR - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2013/E10773.pdf ER -