Catherine Weiskopf Books

Lemon & ice & everything nice!

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Two best friends open a lemonade stand to earn money for matching pairs of pink sunglasses, but they have a hard time determining what a glass of lemonade is worth. Includes math problems and a lem...

If I only Had...

By Lisa Burkhardt Worley, Catherine Weiskopf

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Adventures in mathopolis

By Linda Powley

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If I Only Had...Wrapping Yourself in God s Truth During Storms of Insecurity

By Lisa Burkhardt, Catherine Weiskopf

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Walking with God

By Catherine Weiskopf

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Faith Marker Journey

By Lisa Mick, Catherine Weiskopf

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Pearls of Promise

By Lisa Burkhardt Worley, Lisa Mick, Catherine Weiskopf

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Faith Marker First Step

By Catherine Weiskopf

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Walking with God

By Catherine Weiskopf

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Faith Marker Journey

By Lisa Mick, Catherine Weiskopf

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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.