Maggie Marr Books

Secrets of the Hollywood Girls Club

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Cole Jackson is lethal--in his charm and his reputation. The media mogul and CEO has banished his executive assistant from his executive suite with no explanation. Determined to secure her promotio...

Hard glamour

By Maggie Marr

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Hollywood Girls Club

By Margaret Marr

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Hollywood girls club

By Maggie Marr

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Three women--Jessica, an agency president; Celeste, a popular actress; and Lydia, a producer--struggle to reach the heights of the entertainment industry and to stay there, with the help of naive M...

Hollywood Girls Club

By Maggie Marr

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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.