000 00293nam a2200121Ia 4500
008 250224s9999 xx 000 0 und d
020 _a9780749687960
082 _aJ652.8LAN
100 _aLangley,Andrew
245 0 _aCodes and Codebreaking
260 _bFranklin watts
_c2009
942 _cJBK
999 _c467916
_d467916