000 00300nam a22001097a 4500
008 120716b xxu||||| |||| 00| 0 eng d
050 _aTK5012.5
_b.C37 1975
100 _aCARLSON A. B
245 _aCOMMUNICATION SYSTEMS
300 _a18
942 _2ddc
_cBK
_hTK5012.5
_k.C37 1975
999 _c65100
_d65100