nber working paper series us exports 1972 1994 with state and other data robert c feenstra 5990 national bureau of economic research 1050 massachusetts avenue cambridge ma 02138 april 1997 the files on accompanying cd rom were processed at social science service institute governmental affairs university california davis i gratefully acknowledge staff ssds including jean stratford shelagh matthews mackay eric anderson erick eschker for their invaluable support shunli yao his expert assistance compilation this was supported by a grant from foundation held jointly harry bowen lipsey who have provided excellent advice concordances thanks are also due to those researchers contributed datasets gordon hanson james levinsohn carsten kowalczyk deborah swenson matthew slaughter staiger frank wolak table contents 1 introduction 2 methodology 3 comparison sources 4 calculation domestic based sic 12 5 technical information 15 5a schedule b export 1977 17 5b 1978 1988 19 5c hs 1989 21 5d
