Heather Roan Robbins Books

Starcodes

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An exploration of the unique, empowering concept of choice-based astrology: your destiny is not yet decided and, with a better understanding of your chart, you can make the best choices to live you...

Starcodes

By Heather Roan Robbins

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Starcodes Astro Pocket Oracle

By Heather Roan Robbins

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A pocket-sized, portable version of the best-selling oracle deck that allows readers to seek guidance from the night sky while on the go.One of Hay House's top-selling decks now comes pocket-sized!...

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.