Martin Lisboa Books

IELTS Express Intermediate
Ielts Expss Upp Inter Aud Tpes
IELTS Express Upper Intermediate Workbook 1st Ed
IELTS Upper Intermediate
IELTS Express Intermediate
IELTS express
IELTS express

By Richard Hallows

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A preparation course for candidates studying for the International English Language Testing System examination (IELTS)

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Business Advantage Advanced Classware DVD-ROM
Business Advantage Upper-intermediate Audio CDs
Business Advantage Intermediate Audio CDs
Business Advantage Upper-intermediate Classware DVD-ROM

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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.

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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.

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