000			00406nam a2200145Ia 4500
082			_a004.68 _bRAY
100			_aRAY, Swapan Kumar
245			_aComputer networks, Module-5: data link layer
260			_aCalcutta _bJadavpur University Resource Centre _c1997
300			_a51p
650			_aComputer Science
650			_aElectronics & Communication Engg.
650			_aInformation Technology
650			_aMCA
999			_c3668 _d3668