Notes on perceptual geometries
By: Fred S. Roberts.
Contributors: Rand Corporation.
Series: Paper / Rand -- P-4423; P (Rand Corporation) -- P-4423.
Publisher: Rand Corp.
Published: 1970
Place of publication: [Santa Monica, Calif
Language: eng
Number of pages: 20
Subjects: Visual perception.; Space perception.
Notes: Cover title.

"July 1970."

Includes bibliographical references (p. 19-20).