The Riddle of the Compass: The Invention That Changed the World (Signed)

Upon receiving your order, books will be held until payment is received: cheque, money order, or PayPal, or payment via Biblio.com's options. Shipping: by surface mail within Canada, add $13.00 US for the first book and $2 for each additional book; for airmail service to the U.S. (note there is no longer surface mail service to the U.S. A. from Canada) add $17.00 US for the first book, and $10.00 for each additional book; for international surface mail, add $18.00 US for the first book, or for international airmail, add $40.00 US. For customers in Canada, the HST/GST is included in the price. Shipping costs are based on books weighing up to 2.2 LB, or 1 KG. If your book order is heavy or oversized, we may contact you to let you know extra shipping is required. All books are shipped well protected. Reciprocal discount offered to the trade. Book condition is based on the following guidelines: Fine - a copy with only a very minor flaw and may actually be new and unread; Near Fine - a copy with a more significant flaw or several minor flaws and/or with an overall feel and appearance of a lightly used book; Very Good - a more worn copy but still in collectible condition. Book plates, remainder marks, previous owner names, price-clipped dust jackets and store stamps are always mentioned. A scan of a book cover is available upon request.� 30 day return guarantee, with full refund including shipping costs for up to 30 days after delivery if an item arrives misdescribed or damaged. Please notify Purpora Books prior to return.