TY - BOOK AU - Ramondo, Natalia AU - Rappoport, Veronica AU - Ruhl, Kim J ED - National Bureau of Economic Research TI - Intrafirm trade and vertical fragmentation in U.S. multinational corporations T2 - NBER Working Paper PY - 2015/// CY - Cambridge PB - NBER KW - NBERWP 21472 KW - E15264.pdf UR - http://elibrary.igidr.ac.in/e-library/working papers/NBER/2015/E15264.pdf ER -