000 00214 a2200097 4500
001 39724
100 _aPoularkas A.D
245 _aSignals and systems
260 _aBoston
_bPWS Kent
_c1985
090 _c24733
_d24733
942 _aNUST-CAE
_cM
_c16373
999 _c274797
_d274797