000 00305nam a22001097a 4500
008 230905b |||||||| |||| 00| 0 eng d
022 _a0306-4379
040 _aNational Science Library
_cNational Science Library
245 _aInformation system
260 _aNew York:
_bPergamon Press
942 _cCR
_2udc
999 _c60297
_d60297