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BP237 Upper central line APPEARS shorter than lower central line vs. upper central line APPEARS longer than lower central line.
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CROSSREFS

Adjacent-numbered pages:
BP232 BP233 BP234 BP235 BP236  *  BP238 BP239 BP240 BP241 BP242

KEYWORD

less, anticomputer, subjective, culture, invalid, traditional

CONCEPT length_line_or_curve (info | search),
visual_illusion (info | search)

AUTHOR

Peter Shanahan

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