Light shelfwear to pages and cover edges. Pages have light yellowing due to age. Spine has small crease. Young Alan Bishop knows radar. But a handful of bold scientists have taken the infant technology one step further. Now, in the darkest days of World War II, they are ready to test their Ground Controlled Descent, a revolutionary invention designed to help planes land in any kind of weather. When Bishop joins the British-American team at remote St. Erryn, he finds himself caught in a desperate race against time to alter the course of the war--and begin a new scientific era. Visit my eCRATER Store for other great books and save on shipping! FREE DOMESTIC SHIPPING on orders over $25 when you buy other eligible items!Most books have shelfwear and cover scuffing. Binding is tight unless otherwise noted. If additional information is needed about condition,please ask for a more detailed description. We receive books from many sources and cannot guarantee against pet, perfumeor smoke smells. If this is a concern, please email and we will be glad to check the individual book.All prices are in US dollars.We use actual photos when possiblesince stock photos may be different from our copy.The information provided by eCRATER licensed through MUZE is not always correct and is only provided as a courtesy. If there are any differences, our input is the correct information.DOMESTIC SHIPPING: Most shipping is by Media Mail with delivery confirmation. Discounts available for multiple books that are paid for in one transaction. Priority and Express mail available. Email for details.INTERNATIONAL SHIPPING: We ship worldwide for actual postage plus $1.75 handling per order. International buyers must contact me for final costs before making payment.Pay me securely with any major credit card through PayPal!