00705nam a2200193 a 4500001001300000005001500013008004100028049001700069052001800086082001500104100003600119245010600155260005300261300003100314502006400345504005400409650001500463650003300478WDM20070146620201103164951070802s2003    us a          000   eng  0 lWM515807fDP02a658.57bK495t0 a658.572211 a김정언,d1966-0KAC20141142510aThree essays on welfare implications of R&D policies in the presence of spillovers/dby Jeong-Eon Kim  aAnn Arbor, MI:bUMI Dissertation Services,c2003  avii, 112 p.:bill.;c23 cm1 aThesis(Ph.D.) --bIowa State University,cEconomics,d2003.  aIncludes bibliographical references (p. 109-112). 4aEconomics. 4aResearch & development--R&D.