Joel J. Lerner Books

Schaum's Outline Series Theory and Problems of Introduction to Business

By Joel J. Lerner

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Financial planning for the utterly confused

By Joel J. Lerner

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Schaum's Outline of Principles of Accounting I, Fifth Edition

By Joel J. Lerner, James A. Cashin

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Confused by accounting? Problem solved. Schaum's Outline of Principles of Accounting I helps you understand basic accounting concepts and offer extra practice on topics such as debits, credits, the...

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.