Ashenfelter, Orley, 1942- Statistics and econometrics : methods and applications / Orley Ashenfelter, Phillip B. Levine, David J. Zimmerman - New York : J. Wiley, 2003 - xix, 300 p. : ill. ; 24 cm. ISBN: 0470009454 RM276.85 Subjects--Topical Terms: Social sciences--StatisticsEconometrics