Keep it simple
Edición de la obra Keep it simple
| Autor | Robert Rogers |
|---|---|
| Editorial | Celebration Press |
| Fecha de publicación | 2001 |
| Lugar | Parsippany, NJ |
| Idioma | inglés |
| Páginas | 24 |
| ISBN-13 | 9780673596208 |
| ISBN-10 | 0673596206 |
| OCLC | 50768990 |
| Serie | Little Celebrations · Little Celebrations |
| Número de Cutter | R728k |
Explains how farmers used simple machines such as the wheel and axle, fulcum andlevr, and inclined planes to help them get their produce to market.