https://www.abebooks.co.uk/9780292723382/Perfect-Machine-Letscher-Lance-0292723385/plp
The Perfect Machine - Letscher, Lance: 9780292723382 - AbeBooks
If you could build a perfect machine, what would it be? Would it be something that goes really fast, like a motorcycle, or something that uses sunlight to make...
the perfect machineletscherlanceabebooks