00354pab a2200121 454500008004000000100002000040245010200060260000900162300001400171362000800185650001000193773002900203180718b2006   xxu||||| |||| 00| 0 eng d  aLemieux, Thomas  aIncreasing residual wage inequality: composition effects, noisy data, or rising demand for skill?  c2006  ap.461-98.  aJun  aWages  aAmerican Economic Review