Sharon Finmark Books

600 watercolor mixes

By Sharon Finmark

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500 acrylic mixes

By Sharon Finmark

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"Color is fundamental to painting and the ability to mix and reproduce specific hues is a key skill. Color theory can be dull and complicated; but in 500 Acrylic Mixes experienced artist and teache...

500 Acrylic Mixes

By Sharon Finmark

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600 Watercolour Mixes

By Sharon Finmark

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Learn drawing quickly

By Sharon Finmark

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Easy-to-follow instructions and exercises for learning how to draw with pencils, pen and ink, charcoal, colored pencils, and watercolor. Covers how to draw people, still life, and landscapes.

Learn Drawing Quickly

By Sharon Finmark

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Learn Drawing Quickly

By Sharon Finmark

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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.