000 00294cam a22000977a 4500
008 180718b1971 xxu||||| |||| 00| 0 eng d
082 _aQ43065 Un3
245 _aGuidelines for statistics on children and youth (provisional)
260 _aNew York
_bUnited Nations Publication
_c1971
300 _a82p.
999 _c494375
_d494375