Books by Ruth A. Allen

1 title available, newest first by original publication date.

Automata Making for Beginners: 15 Engaging Mechanical Projects with Step-by-Step Instructions, Precise Measurements, and Easy-to-Master Mechanisms cover

Automata Making for Beginners: 15 Engaging Mechanical Projects with Step-by-Step Instructions, Precise Measurements, and Easy-to-Master Mechanisms

Ruth A. Allen

$17.99