000 00230 a2200097 4500
001 39000
100 _aHelfrick
245 _aPractical Aircraft Electronic Systems
260 _aU S A
_bPrentice Hall
_c1995
090 _c24619
_d24619
942 _aNUST-CAE
_cM
_c16246
999 _c274073
_d274073