Dr. Broth and Ollie's brain-boggling search for the lost luggage :
Abrams, Michael
Dr. Broth and Ollie's brain-boggling search for the lost luggage : across time and space in 80 puzzles / by Michael Abrams & Jeffrey Winters ; illustrated by Marc Rosenthal. - New York : Fireside, 2000. - 192 p.
0684870010
Mathematical recreations
Dr. Broth and Ollie's brain-boggling search for the lost luggage : across time and space in 80 puzzles / by Michael Abrams & Jeffrey Winters ; illustrated by Marc Rosenthal. - New York : Fireside, 2000. - 192 p.
0684870010
Mathematical recreations