00294nam a2200121Ia 4500020001800000082002100018100001900039245002400058250001200082260004500094650001500139700001800154  a9780071153423  a330.015195 JOH/E  aJohnston, Jack 0aEconometric Methods  a4TH ED.  bMcgraw-Hill Book CompanyaNew Yorkc1997  aEconomists  aDinardo, John