In the matter of certain cube puzzles
Subtitle: investigation no. 337-TA-112
Series: USITC publication -- 1334
Publisher: U.S. International Trade Commission
Published: 1983
Place of publication: Washington, D.C
Language: eng
Number of pages: 45
Subjects: Puzzles; Magic squares; Rubik's Cube
Other titles: Certain cube puzzles
Notes: Cover title

"January 1983."

Includes bibliographical references