Shipments to the United States
Due to changes in U.S. customs regulations, all shipments to the United States are now subject to customs clearance.
This means that the recipient will be required to pay customs duties, as well as any applicable taxes and fees upon import.
Please also note that delivery may be delayed while the shipment is being processed by U.S. customs.
![Cover for Heinrich Kayser · Tabelle Der Hauptlinien Der Linienspektren Aller Elemente Nach Wellenlange Geordnet (Paperback Book) [2nd 2. Aufl. 1939 edition] (1968)](https://imusic.b-cdn.net/images/item/original/220/9783662230220.jpg?heinrich-kayser-1968-tabelle-der-hauptlinien-der-linienspektren-aller-elemente-nach-wellenlange-geordnet-paperback-book&class=scaled&v=1461346896)
![Cover for Heinrich Kayser · Tabelle Der Hauptlinien Der Linienspektra Aller Elemente Nach Wellenlange Geordnet (Paperback Book) [Softcover Reprint of the Original 1st 1926 edition] (1926)](https://imusic.b-cdn.net/images/item/original/340/9783662017340.jpg?heinrich-kayser-1926-tabelle-der-hauptlinien-der-linienspektra-aller-elemente-nach-wellenlange-geordnet-paperback-book&class=scaled&v=1469982762)
![Cover for Heinrich Kayser · Lehrbuch Der Spektralanalyse (Paperback Book) [Softcover Reprint of the Original 1st 1883 edition] (1901)](https://imusic.b-cdn.net/images/item/original/230/9783642525230.jpg?heinrich-kayser-1901-lehrbuch-der-spektralanalyse-paperback-book&class=scaled&v=1538440189)