00307nam a2200109Ia 450000500170000008000190001724500250003626000720006130000110013350000340014458300190017820260716043053.0  a08.05.02 I59lo  aLogical link control  bInstitute of Electrical and Electronics EngineersaNew YorkUSc1988  a111 p.  aAn American national standard  c3/7/00kM2LMGR