Cath Hakanson Books

Parents Guide to Explaining Sex
Parents Guide to Private Body Parts
Parents Guide to Private Body Parts
PaperDoll SuperHeroes
PaperDoll SuperHeroes

By Cath Hakanson

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PaperDoll Families
The Sex Education Answer Book
The Sex Education Answer Book

By Cath Hakanson

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By the age responses to tough questions kids ask parents about sex (for parents of kids aged 3 -14)

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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.

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