00255nam a2200097Ia 4500080001700000100001600017245004700033260004300080300001500123583001900138  a08.15.02 K73  aKnowles, T.  aStandards for open systems interconnection  bBSP Professional BooksaLondonGBc1987  aix, 388 p.  c3/7/00kM2LMGR