000 00289nam a2200121Ia 4500
008 250224s9999 xx 000 0 und d
020 _a9780521778909
082 _aJ621.3822GAT
100 _a Gates,Phil
245 0 _aCodes and signals
260 _bPress syndicate
_c1997
942 _cJBK
999 _c465629
_d465629