Questions and answers provide information about how cameras, elevators, car engines, tops, yo-yos, and other devices work. Includes charts, diagrams, and an activities section.

"About this title" may belong to another edition of this title.

Store Description

ThriftBooks is a fully independent seller of used books, having sold more than 160 million used and new books since we started in 2003. Each quality used book is sorted, graded, shelved and shipped by hand by our team of dedicated employees in our seven warehouses across the US. We have the best selection of books, in the right condition and format, at everyday low prices. We also have a dedicated, US-based Customer Service team, ranked in the top three by Newsweek for Best Customer Service in 2018 and 2019, so you can shop with confidence. We support and invest in our employees, appreciate and value our customers, and truly believe in the power of the written word to educate, energize, and engage readers of all ages and interests.

Visit Seller's Storefront

Seller's business information

Thrift Books Global LLC
18300 Cascade Ave S, Ste 150, Tukwila, WA, 98188, U.S.A.

Sale & Shipping Terms

Terms of Sale

We guarantee the condition of every book as it's described on the Abebooks website. If you're dissatisfied with your purchase or if the order hasn't arrived, you're eligible for a refund within 30 days of the estimated delivery date. If you've changed your mind about a book that you've ordered, please use the "Ask bookseller a question" link to contact us and we'll be happy to assist you.

Shipping Terms

All domestic Standard shipments are distributed from our warehouses by OSM, then handed off to the USPS for final delivery.

International shipments are tendered to the local postal service in the destination country for final delivery – We do not use courier services for international deliveries.

Shipping rates within U.S.A.

Shipping rates within U.S.A.
Order quantity	4 to 8 business days	4 to 8 business days
First item	US$ 0.00	US$ 0.00

Delivery times are set by sellers and vary by carrier and location. Orders passing through Customs may face delays and buyers are responsible for any associated duties or fees. Sellers may contact you regarding additional charges to cover any increased costs to ship your items.