Generalized Clifford Parallelism

Books are usually shipped within two working days. All of our books have a 14 or 30 day no hassle money back guarantee unless stated otherwise in the book's description. Item must be returned in the exact same condition that it was received. Through our work with The Rainbow Centre and other Charity Partners, we have already given hundreds of young people in Sri Lanka and Africa the vital chance to get an education.

Your satisfaction is extremely important to us and we would be happy to work with you to try and resolve any issues with your order. Please contact us via the Abe messaging centre regarding any problems and we will respond asap.

Please kindly send any return requests or reports of defects, damage, or material differences within 7 days of receipt of your order or 30 days from the date of shipment.

If you are making a return we will need to receive the item within 30 days from the date of shipment for UK orders or 90 days from the date of shipment for international orders. Similarly, we require that non-deliveries be reported within 30 days from the date of shipment for UK orders or 90 days from the date of shipment for international orders.

If your parcel is returned by the postal service due to being unclaimed, refused, or having an undeliverable or insufficient address, we will contact you to try and resolve the issue. If this is not possible, or if we do not hear back, we will refund you the cost of your order minus the original postage paid.

Orders usually ship within 2 business days. Shipping costs are based on books weighing 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.

In spite of our best efforts, a small number of the items in our catalogue may be mispriced or out of stock. If an item's correct price is higher than our stated price, we will, at our discretion, either contact you for instructions before shipping or cancel your order and notify you of such cancellation.