000 00302nam a22000977a 4500
008 231004b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
245 _abulletin of the UNESCO filed science office for Africa
260 _aBangkok:
_bUNESCO
942 _cCR
999 _c62488
_d62488