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 Mary Ann Bjornsti · DNA Topoisomerase Protocols: Volume II: Enzymology and Drugs - Methods in Molecular Biology (Hardcover Book) [2001 edition] (2000)](https://imusic.b-cdn.net/images/item/original/126/9780896035126.jpg?mary-ann-bjornsti-2000-dna-topoisomerase-protocols-volume-ii-enzymology-and-drugs-methods-in-molecular-biology-hardcover-book&class=scaled&v=1502023059)
![Cover for Mary Ann Bjornsti · DNA Topoisomerase Protocols: Volume I: DNA Topology and Enzymes - Methods in Molecular Biology (Hardcover Book) [1999 edition] (1999)](https://imusic.b-cdn.net/images/item/original/440/9780896034440.jpg?mary-ann-bjornsti-1999-dna-topoisomerase-protocols-volume-i-dna-topology-and-enzymes-methods-in-molecular-biology-hardcover-book&class=scaled&v=1539453862)