00630nam a2200205ia 450000500170000000800410001701000130005802000150007104000130008605000250009908200190012424500550014326000360019826300100023430000350024450400510027965000280033065000340035870000320039220230110145140.0090407s1990    maum     b   a00110 eng    a90-30131  a0890063400  aDLCcDLC00aTK6570.M6bM594 199000a621.3845/622000aMobile information systems /cJohn Walker, editor.0 aBoston :bArtech House,cc1990.  a9005.  axxii, 388 p. :bill. ;c24 cm.  aIncludes bibliographical references and index. 0aInformation technology. 0aMobile communication systems.10aWalker, John,d1944 Nov. 5-