000 00454nam a22001817a 4500
003 CEME
005 20210628205523.0
008 210308b xxu||||| |||| 00| 0 eng d
020 _a0-7176-2314-X
040 _c.
082 _a793.74 SHA'C
100 _aShasha, Dennis
_975208
245 _aCodes puzzels and conspiracy
260 _aNEWYORK
_bW. H. FREEMAN
_c1992
300 _a241P
650 _aMATHEMATICAL RECREATIONS
_938848
942 _cBK
_2ddc
999 _c581284
_d581284