Lawrence Zelenak Books

Figuring Out the Tax

By Lawrence Zelenak

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Federal Income Taxation

By Richard Schmalbeck, Lawrence Zelenak, Sarah B. Lawsky

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Federal income taxation

By Marvin A. Chirelstein

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"[This book] explains the conceptual basis of federal income taxation. It is designed to help students quickly pull together the entire subject for end-of-semester review and provide perspective ab...

Learning to love Form 1040

By Lawrence Zelenak

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Learning to love Form 1040

By Lawrence Zelenak

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Federal Income Taxation Casebook

By Lawrence Zelenak, Richard L. Schmalbeck, Richard Schmallback

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Federal Income Taxation

By Lawrence Zelenak, Richard L. Schmalbeck

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Federal income taxation

By Richard L. Schmalbeck

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Federal income taxation

By Richard L. Schmalbeck

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Figuring Out the Tax

By Lawrence Zelenak

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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.