Eric Seltzer Books

Four Pups and a Worm

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When needing to solve a problem, the reader can call upon four pups and a worm for help with anything from tying a tie to delivering bubbles.

4 pups and a worm

By Eric Seltzer

Average: 0.00, 0 Ratings

When needing to solve a problem, the reader can call upon four pups and a worm for help with anything from tying a tie to delivering bubbles.

Arf Buzz Cluck

By Eric Seltzer

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M, N, O, P becomes Moo! Neigh! Oink! Peep! in this silly, inventive alphabet board book that teaches little ones the ABCs with animal sounds.

Space cows

By Eric Seltzer

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Read all about space cows in this book for beginning readers who like to giggle!

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.