000 00331nam a2200097 4500
245 _aApproaches and methods used in long-term social planning and policy making held at Arc-et-Senans from 3 - 10 May
100 _aU.N. Economic Commission for Europe
260 _a[s.l.]
_b[s.n.]
_c1972
300 _aiv,274p.; 28cm.
082 _a301.212
_bUN
999 _c4678
_d4678