E. L. Lancaster Books

Kid's Piano Course, Book 2

By E. L. Lancaster, Gayle Kowalchyk, Christine H. Barden

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Alfred's Group Piano for Adults: GM 14-Disk Set for Level 1 (2nd Edition)

By E. L. Lancaster, Kenon D. Renfrow

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The 14 General MIDI disks in this set contain more than 500 accompaniments and practice exercises that fully support Alfred's Group Piano for Adults, Book 1 (Second Edition). The easy-to-use disks...

Piano for Busy Teens, Bk 2: 12 Pieces with Study Guides to Maximize Limited Practice Time

By E. L. Lancaster, Melody Bober, Gayle Kowalchyk

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This method is designed for teens who still enjoy music and want to continue their study but have limited practice time. Each book includes solo pieces in varied styles, a Hanon study to develop te...

Music for Little Mozarts Little Mozarts Go to Church Bk 1 2

By E. L. Lancaster, Gayle Kowalchyk, Christine H. Barden

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Alfred s Basic Piano Library Ear Training Bk 6

By E. L. Lancaster, Gayle Kowalchyk

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Music for Little Mozarts Coloring, Book 3: Fun With Music Friends at School

By E. L. Lancaster, Gayle Kowalchyk, Christine H. Barden

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Happy-Go-Lucky: Sheet

By E. L. Lancaster

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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.