Notions sur la théorie des quaternions

· Titles are offered subject to prior sale. The chronology of incoming orders will be strictly respected. · The books are described in detail and are generally in a good condition (minor defects are not always stated though). · An E-mail will be sent to inform about the availability and the total cost (including shipping expenses). · Payment has to be made in advance. The ordered books will be on hold for you during 2 weeks until we have received your payment. · Payment can be made via creditcard or by banktransfer to our Belgian bankaccount. Paypal is not accepted. · Forwarding expenses (and additional insurance - on demand) are at the buyer's expenses. · Books are returnable within 14 days. · Additional information can be obtained on demand by e-mail: delezenaar@telenet.be