Holly Kowitt Books

Wacky Answers to Silly Questions

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Yo Banana Boy Palindromes Anagrams and Oxymorons

By Holly Kowitt

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Nickelodeon the wild Thornberrys holiday joke book

By Holly Kowitt

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Get into the holiday spirit with this hilarious book from the wild Thornberrys.

Belly laughs from bikini bottom

By Holly Kowitt

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Whoop it up with SpongeBob and his friends in this latest book of sidesplitting sillies.

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.