000			00820nam a22002177a 4500
005			20230612110434.0
008			230612b |||||||| |||| 00| 0 eng d
020			_a0716719878 (pbk.)
020			_a071671986X (hard)
040			_aDLC _cKMU _dKMU
050	0	0	_aQA95 _b.G298 1989
100	1		_aGardner, Martin, _d1914-2010.
245	1	0	_aPenrose tiles to trapdoor ciphers / _cMartin Gardner.
260			_aNew York : _bFreeman, _cc1989.
300			_aix, 311 p., [4] p. of plates : _bill. (some col.) ; _c24 cm.
504			_aIncludes bibliographies and index.
650		0	_aMathematical recreations.
906			_a7 _bcbc _corignew _d1 _eocip _f19 _gy-gencatlg
942			_2lcc _cBK _n0
999			_c409 _d409