TY - BOOK AU - Kaplow, Louis ED - National Bureau of Economic Research TI - An Optimal tax system T2 - NBER Working Paper PY - 2011/// CY - Cambridge PB - NBER KW - NBERWP 17214 KW - E5755.pdf UR - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2011/E5755.pdf ER -