Useful links

If you require a barcode number then here are some useful links:

ISBN Barcodes

Publisher Services

875 N. Michigan Ave #2950

Chicago, IL 60611

Tel: 1-800-662-08701 x240

ISSN Barcodes

U.S. ISSN Center

Library of Congress

101 Independence Avenue, S.E.

Washington, D.C. 20540-4284

Tel: +1-202.707.6452

GS1 US (EAN/UPC Barcodes)

GS1 US

7887 Washington Village Drive, Suite 300

Dayton, OH 45459

Tel: +1 937.435.3870

Fax: +1 937.435.7317