TY - BOOK AU - Kerr, Sari Pekkala AU - Kerr, William R AU - Lincoln, William F ED - National Bureau Of Economic Research TI - Skilled immigration and the employment structures of U.S. firms T2 - NBER Working Paper PY - 2013/// CY - Cambridge PB - NBER KW - NBERWP 19658 KW - E10813.pdf UR - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2013/E10813.pdf ER -