Dory Willer Books

APHR Associate Professional in Human Resources Certification All In One Exam Guide

By William H. Truesdell, William D. Kelly, Dory Willer

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APHR Associate Professional in Human Resources Certification All In One Exam Guide Second Edition

By William H. Truesdell, William D. Kelly, Dory Willer, Christina Nishiyama

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SHRM-CP SHRM-SCP Certification Bundle

By William H. Truesdell, William D. Kelly, Dory Willer, Joanne Simon Walters

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Prepare for the SHRM-CP and SHRM- SCP exams with this money-saving, comprehensive study package Designed as a complete self-study program, this collection offers a variety of proven, exam-focused r...

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.