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. : ill. (some col.) ; 24 cm.

Includes index.

ISBN: 043910484X

Subjects--Topical Terms:
Optical illusions.

Dewey Class. No.: 152.148 / SIM