000 00697nam a2200217Ia 4500
008 191130s1997##################000#0#eng##
020 _a9780883855218
022 _a97070505
040 _aACL
_cACL
082 _a793.73 GAR
100 _aGardner, Martin
245 _aPenrose tiles to trapdoor ciphers : --and the return of Dr. Matrix
_cMartin Gardner
250 _aRev. ed
260 _aWsshington, DC
_bMathematical Association of America
_cc1997
300 _aix, 319 p. : ill. (some col.) ; 24 cm
500 _aIncludes bibliographical references and index
650 _aMathematical recreations
990 _aa69183c8ac10000c686ea90c3e47b4c9
991 _a341476
999 _c33513
_d33513