000 00315nam a2200121Ia 4500
005 20250114222415.0
008 250113s9999 xx 000 0 und d
041 _aeng
082 _aY1m53:N50
245 _aImpact of Sci. On Soc. Nos. 1-4 133-136
260 _c1984
_bUnited Nations Educa Sci
_aParis
365 _cRs.
999 _c127454
_d127454