Dr Romy Block Books

The Vitamin Solution

By Katherine Tonkin, Dr Arielle Levitan, Dr Romy Block

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The Vitamin Solution: Two Doctors Clear The Confusion About Vitamins And Your Health

By Arielle Levitan, Romy Block, Dr Romy Block, Dr Arielle Levitan

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Are you confused about vitamins? Unsure of which ones you need for optimal health, and what levels are safe? You’re not alone. Many people’s health issues could be improved with vitamins—if they on...

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.