00425nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001500084100001600099245005400115260004600169300001500215650001600230650002100246IN-BaIIA211028s9999    xx            000 0 eng d  a0-677-02930-6  cIIA Library  a681.3bBLA  aBlack, W. W 3aAn introduction to on-line computerscW. W. Black  aNew YorkbGordon and Breach Sciencec1971  axii, 449p.  a Computers  aNASA thesaurus