Alan Turing; the Enigma

Terms of Sale All items returnable for refund if, for any reason, you're not happy with the purchase, within ten days of delivery, but the same book must be returned in the same condition that it was in when it was shipped. If you have any questions about a book, please e-mail or call before ordering. We are an open brick and mortar store; books are subject to prior sale. We can accept only prepaid orders. We will provide a pro forma invoice if the total is over $50.00. If not using a credit card, books are held for seven days pending payment. Books are shipped by U. S. Postal Service media rate unless other arrangements are made. Priority is at least $7.50 for the first book or more depending on the zone and weight and $2.00 for each additional book; please e-mail or call to inquire about priority. Shipping/handling for sets, oversize books, and international shipping is extra: please e-mail or call to inquire. Although we do not designate every oversize book in the description, we will e-mail for approval that shipping/handling or tax is added to the amount before we charge your credit card. For domestic orders, we accept VISA, MasterCard, check, and money order. Because of currency conversion charges, international orders must be made with credit card. Iowa residents must add 7% sales tax. We gladly drop ship.