000 00552 a2200265 4500
001 5223
020 _a0-486-23549-14
041 _aeng
080 _a7.017 Tur
245 _aTriad optical illusions and how to design them with 32 plates to color
250 _a
260 _aNew York
260 _bDover Pub.,
260 _c1978
300 _a30 p.
300 _c28 cm
490 _a
100 _aTurner, Harry
700 _a
650 _a
650 _aOptical illusions
650 _aTriads (Philosophy)
942 _cBK
942 _2UDC
999 _c6579
_d6579