00450nam a2200193 a 450000500170000002000180001708200150003510000080005011000190005824500280007726000250010530000270013050000260015760000080018363000220019163000310021385600060024485600060025020251203115006.0  a9789351151449  a004.6bNET  ad_  a3G  E learning  aNetworks and systemsb_  a3G  E learningc2014  a197 p.c22 cm.bPBeCD  aIncludes bibliography  bc_  aComputer Networks  aNetwork and Control system  f_  a_