Lester Helen. Books

The shy people's picnic

By Lester Helen.

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Le poulet magicien se fache

By Lester Helen.

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Tacky s Christmas

By Lester Helen.

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Goodly, Lovely, Angel, Neatly, Perfect, and Tacky are having a wonderful Christmas, complete with an unusual tree, when Tacky's odd behavior saves them from a group of hunters.

Tacky goes to camp

By Lester Helen.

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Tacky the penguin and his friends go to Camp Whoopihaha where they scare each other by telling ghost stories around the campfire, never expecting that one of the frightening stories will come true.

Lin's backpack

By Lester Helen.

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Me first

By Lester Helen.

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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.