Angrist, Joshua D. Mostly harmless econometrics : an empiricist's companion / Joshua D. Angrist and Jorn-Steffen Pischke - Princeton : Princeton University Press, c2009 - xiii, 373 p. : ill. ; 22 cm. ISBN: 9780691120348 9780691120355 Subjects--Topical Terms: EconometricsRegression analysis Dewey Class. No.: 330.015195 / A593M