000 00388cam a22001097a 4500
008 180718b2003 xxu||||| |||| 00| 0 eng d
100 _aAddison, Douglas M.
245 _aProductivity growth and product variety: gains from imitation and education
_cby Douglas M. Addison
260 _aWashington, D.C.
_bWorld Bank
_c2003
300 _a25p.
440 _aPolicy research working paper; no. 3023
999 _c289589
_d289589