TY - GEN AU - Angrist, Joshua David AU - Pischke, Jorn-Steffen TI - Mostly harmless econometrics: an empiricist’s companion SN - 9780691120355 U1 - 330.015195 PY - 2009/// CY - Princeton PB - Princeton University Press KW - Econometrics KW - Regression Analysis KW - Business ER -