All items are subject to prior sale. Prices in Swiss Francs. Shipping and handling are extra. We will confirm book availability and shipping charges by return E-Mail. From customers unknown to us we request payment in advance. Payment by AMEX/Visa/MasterCard, direct bank transfer or check in CHF. The books remain our property until the full amount has been paid. All disputes which may arise are subject to Swiss law. In such a case Zürich will be the place of jurisdiction. If not as described books may be returned to us within 8 days of receipt and with prior notice only.