Kallis EDU Inc Books

Kallis 2016 redesigned SAT pattern strategy

By Kallis EDU Inc

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Kallis 2017 redesigned SAT pattern strategy

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Kallis iBT TOEFL pattern

By Kallis EDU Inc

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"[A] three-level iBT TOEFL Writing Exam preparation book series to help students develop skills necessary to excel at the writing portion of ETS' iBT TOEFL exam"--

Kallis' iBT TOEFL pattern

By Kallis EDU Inc

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"[A] three-level iBT TOEFL Writing Exam preparation book series to help students develop skills necessary to excel at the writing portion of ETS' iBT TOEFL exam"--

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.