00330pam a2200145a 44500008004100000020000900041041001200050082000900062100001300071245004700084250000600131260003000137300000800167650000900175230515b2000    xxu||||| |||| 00| 0 eng d  aNULL  aENGLISH  aN.D.  aDodd A.Z  aThe Esseential Guide To Telecommunications  a0  aNULLbPrentice Hallc2000  a251  aNULL