Simon, Seymour.

Now you see it, now you don't : the amazing world of optical illusions / Amazing world of optical illusions. Seymour Simon ; drawings by Constance Ftera. - Rev. ed. - New York : Scholastic, 1999, c1998. - 64 p., [8] p. of plates : ill. (some col.) ; 24 cm.

Includes index. "This edition is only available for distribution through the school market"--p. [4] of cover.

ISBN: 0-439-10484-X (pbk.) : $8.00

Subjects--Topical Terms:
Optical illusions.
Optical illusions in art.
Optical illusions--Experiments.

Dewey Class. No.: 152.148 / SIM