00787nam a2200217Ia 450000100070000000500170000700800410002401000150006502000220008002000290010204000180013105000210014908200170017010000290018724501570021626000430037330000280041650400660044465000300051065000290054030778020160527185635.0900208s1990    nyua     b    001 0 eng    a 90032451   a0716721341c38.95  a0716721333 (pbk.)c14.95  aDLCcDLCdDLC00aQP495b.S47 199000a152.14/82201 aShepard, Roger N.2Local10aMind sightsboriginal visual illusions, ambiguities, and other anomalies, with a commentary on the play of mind in perception and artcRoger N. Shepard.  aNew YorkbW.H. Freeman and Co.cc1990.  ax, 228 p.bill.c23 cm.  aIncludes bibliographical references (p. [215]-221) and index. 0aOptical illusions.2Local 0aVisual perception2Local