Explore the fascinating world of engineering and technology with this complete hardcover book set by Roger Jean Segalat. With four volumes filled with illustrations and detailed explanations, readers can learn about topics ranging from building plans and architecture to airplanes and automobiles. This set is perfect for young adults and adults alike, offering a unique blend of education and entertainment.

Discover the secrets behind how things work without having to worry about the item's condition. From model railroads to motor sports, this set covers a wide range of topics that will satisfy any curious mind. Don't miss out on the opportunity to delve into the world of engineering and technology with this must-have book set.