Position	Website	Change	Thumbnail
1	isbn.org - U.S ISBN Agency - Welcome to the U.S. ISBN Agency, the official source for ISBNs in the United State... Welcome to the U.S. ISBN Agency, the official source for ISBNs in the United States. No other source can assign legitimate ISBNs to US publishers. B...	0
2	pcn.loc.gov - Electronic PCN: Cataloging in Publication Program (Library of Congress) Electronic PCN: Cataloging in Publication Program of the Library of Congress.	12
3	myidentifiers.com - Welcome To My Identifiers | Bowker | Identifier Services	4
4	barcoderobot.com - UPC-A, EAN-13, ISBN-13 - generate, download online digital barcode files and images | BarCodeRobot.c... BarcodeRobot provides everyone with on-line generated world-class Barcode images of EAN-13, UPC-A and ISBN-13 barcodes in PostScript (vector) or JPG, ...	2
5	bowker.com - Bowker.com The world`s leading provider of bibliographic information management solutions designed to help publishers, booksellers, and libraries better serve th...	0
6	isbn-us.com - ISBN Number | Welcome To Publisher Services. Obtain ISBNs in Minutes Online. Get an ISBN in minutes. ISBN US is an experienced, trusted resource for your book ISBN. Get information or order your ISBN today!	-3
7	dummies.com - How-To Help and Videos - For Dummies Make everything easier in your life with step-by-step instruction, how-to information, and video demonstrations awaiting your discovery at dummies.com...	8
8	abebooks.com - AbeBooks Official Site - New & Used Books, New & Used Textbooks, Rare & Out of Print Boo... AbeBooks is your source for Used, New, Rare and Out of print books. Find classic collectibles, rare signed editions, used textbooks, and inexpensive ...	0
9	tux.org	-1
10	thefreedictionary.com - Dictionary, Encyclopedia and Thesaurus - The Free Dictionary Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictiona...	0
11	bar-code.com - Welcome to AccuGraphiX - "The Bar Code People"	0
12	bookcovers.creativindie.com - Creative Book Cover Designer, Book Cover Design, Book Design, Self-Publishing, Derek Murphy Creativindie Book Covers helps self-publishing authors sell more books with smart book cover design, author branding, and creative book promotion and ...	0

I have no idea. Please, refresh tomorrow ;)

Site	Traffic	Engagement
isbnonline.com	67%	0x
isbn.com.es	9.7%	0x
mcu.es	5.1%	0x
agenciaisbn.es	5.1%	0x
isbn.org	3.7%	1x
Other	9.4%	0x

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