TY - BOOK AU - Angrist, Joshua D. AU - Pischke, Jorn-Steffen TI - Mostly harmless econometrics : an empiricist's companion SN - 9780691120355 U1 - 330.015195 PY - 2009/// CY - New Jersey PB - Princeton University Press KW - Econometrics KW - Regression analysis KW - HS626 ER -