000 00293cam a22000977a 4500
008 180718b1981 xxu||||| |||| 00| 0 eng d
082 _aTooo Un3me
245 _aSocio-economic indicators for planning methodological aspects and selected examples
260 _aParis
_bUnesco
_c1981
300 _a122p
999 _c496680
_d496680