000 00302nam a22001217a 4500
008 230712b |||||||| |||| 00| 0 eng d
022 _a006-3835
040 _aNational Science Library
_cNational Science Library
245 _aBIT
260 _bUNESCO,
_c1961
310 _aQuarterly
942 _cCR
_2udc
999 _c51983
_d51983