An Engineering Approach to Optimal Control and Estimation Theory George M. Siouris ISBN: 978-0-471-12126-8 Hardcover 407 pages February 1996 US $192.00 Add to Cart This price is valid for United States. Change location to view local pricing and availability. This is a Print-on-Demand title. It will be printed specifically to fill your order. Please allow an additional 5-6 days delivery time. The book is not returnable.