9780060162948, titled "Do Penguins Have Knees?: An Imponderables Book" | Harpercollins, November 1, 1991, cover price $19.00 |
About this edition: The latest collection of suprising 'imponderables' answers such eternal questions as 'Why are there holes in saltines?
9780060740917, titled "Do Penguins Have Knees?: An Imponderables Book" | Reprint edition (Perennial, November 1, 2004), cover price $12.99 |
About this edition: A humorous look at some of life's mysteries wonders how beer was kept cold in the Old West, what that white stuff is on bubble gum, why there are holes in saltines, and other baffling questions.
9780060923273 | Perennial, August 1, 1992, cover price $12.95 |
About this edition: A humorous look at some of life's mysteries wonders how beer was kept cold in the Old West, what that white stuff is on bubble gum, why addresses on subscription magazines are printed upside down, and others