000 00363nam a2200133Ia 4500
001 124071
008 170722s9999 xx 000 0 und d
020 _a8120312791
100 _aCouch Ii, Leon W.
245 _aModern communication systems :
_b Principles and applications.1998. /
260 _aNew Delhi :
_bPHI ,
_c1998.
300 _aPpXXX+598
942 _cGEN
999 _c120707
_d120707