TY - RPRT A1 - Wilde, E.T. A1 - Batchelder, L. A1 - Ellwood, D. T1 - The mommy track divides: The impact of childbearing on wages of women of differing skill levels Y1 - 2010 PB - National Bureau of Economic Research CY - Cambridge IS - NBER working paper no. 16582 ER -