00841    a2200385   4500000002100000001000700021005001700028008004100045010000500086020001800091082002100109100002300130110000500153245010500158250000500263260004800268300001000316490000700326500000500333600000500338610000500343611000500348630001400353650000500367651000500372654000500377700003000382710000900412711000500421720000500426730000500431740000500436752000500441856000900446BKB                 14200620200902165902.0                                          a  a9780691120345  a330.015195bA48M1 aAngrist, Joshua D.  a1 aMostly harmless econometrics: an empiricist companioncby Joshua D. Angrist and Jorn Steffen Pischke  a  aPrincetonbPrinceton University Pressc2009  a373p.  av  a  a  a  a  aEconomics  a  a  a  aPischke, Jorn Steffenbc  abc  a  a  a  a  a  adf