Birtwistle, Claude. The calculator puzzle book / [electronic resource] / by Claude Birtwistle.. — New York : : Bell Pub. Co.,, c1978.. — 125 p. : : ill. ; 24 cm.

Includes index.



ISBN: 0517266822 9780517266823

LCCN: 78025783

Subjects--Topical Terms:
Calculators--Problems, exercises, etc.
Mathematical recreations.

LC Class. No.: QA75 / .B55

Dewey Class. No.: 793.7/4