*Reference works, forthcoming titles, titles affected by fixed book price laws, and subscriptions are excluded from the promotion, as are Bulk or eBulk orders. This offer is valid only for individual customers, redeemable only in the Springer Shop and applies only to available English language titles in aforementioned subject area(s). The currency in which your order will be invoiced depends on the billing address, not necessarily your home currency; promotional prices may change due to exchange rates. Institutions such as libraries and corporations are excluded. For institutional sales please visit springernature.com/contact-us. This promotion does not work in combination with other discounts or gift cards.