Longley-Cook, L. H. Work this one out / [electronic resource] / by L.H. Longley-Cook.. — Greenwich, Conn. : : Fawcett Books,, c1960.. — 128 p. : : ill. ; 18 cm.

"A Fawcett gold medal book."



ISBN: 0449139336 (pbk.) : $1.25 9780449139332 (pbk.)

Subjects--Topical Terms:
Mathematical recreations.
Puzzles.

LC Class. No.: QA95 / .L8