John Gerlach Books

Gerlach Collection Set

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"From how many frames you need to shoot per second to capture that WOW moment to where to focus on a bird with a big beak to get the best depth of field, this book has it all for the wildlife photo...

Digital Wildlife Photography

By John And Barbara Gerlach

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Digital Landscape Photography

By John And Barbara Gerlach

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Close up Photography in Nature

By John Gerlach, Barbara Gerlach

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Hawaii

By J. Gerlach

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Digital Wildlife Photography

By John And Barbara Gerlach

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Digital Wildlife Photography

By John And Barbara Gerlach

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Digital Wildlife Photography

By John And Barbara Gerlach

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Digital Landscape Photography

By John And Barbara Gerlach

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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.