000 | 00299 am a2200121 a 4500 | ||
---|---|---|---|
100 | 1 |
_a _d |
|
245 | 1 |
_aLabor productivity _bUn tour d'horizon |
|
260 |
_aWashington _c1981 |
||
300 | _a1-70 p. | ||
942 |
_2udc _cB |
||
440 | _aWashington World Bank Staff Working Paper No. 497 | ||
901 | _aS34671 | ||
999 |
_c114492 _d114492 |