Leonard Kessler Books

The Sweeneys from 9D

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The three Sweeney children face their first day at a new school and their first afternoon of taking care of themselves while their mother is at work.

The family under the Moon

By Nancy Jewell

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The moon's shining down on their house inspires members of a family to think their own pleasant thoughts.

Here Comes the Strikeout

By Leonard P. Kessler

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Bobby changes from an "easy out" to a game-winning hitter with the help of a friend and a lot of hard work.

Aqui Viene El Que Se Poncha!

By Leonard P. Kessler

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Bobby changes from an "easy out" to a game-winning hitter with the help of a friend and a lot of hard work.

El Ultimo en Tirarse es un Miedoso

By Leonard P. Kessler

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After Freddy is pushed into deep water by a couple of toughs, he decides to learn to swim.

Kick, Pass, and Run

By Leonard P. Kessler

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After observing a boy's football game, a group of animals organizes its own teams and game.

Last One in Is a Rotten Egg

By Leonard P. Kessler

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After Freddy is pushed into deep water by a couple of toughs, he decides to learn to swim.

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.