000 00469nam a2200181Ia 4500
008 240925s9999 xx 000 0 und d
020 _a76101986
082 _a793.74 MAR
100 _aMartin , Gardner
245 0 _aPenrose tiles to trapdoor ciphers
250 _aNA
260 _aNew York:
_bW. H. Freeman
_c,1989.
300 _aviii,326p.
_bNA
_fOriginal
500 _aNA
600 _aHumanities & Natural Science
650 _aArts and Recreation
942 _cBK
999 _c5818
_d5818