Alfred H. Siemens Books

A favored place

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The wetlands of the San Juan Basin in Central Veracruz, Mexico, were a favored place for their ancient inhabitants. Around the fifth century A.D., Prehispanic people built an extensive network of c...

Between the summit and the sea

By Alfred H. Siemens

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The Americas

By Alfred H. Siemens

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Lower Fraser Valley Evolution of a Cultural Landscape

By Alfred H Siemens

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Green Mackinaw

By Alfred H. Siemens

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Tabasco prehispanico

By Alfred H. Siemens, Lorenzo Ochoa, Javier Hinojosa

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Favored Place

By Alfred H. Siemens

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Favored Place

By Alfred H. Siemens

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Between the Summit and the Sea

By Alfred H. Siemens

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Between the Summit and the Sea

By Alfred H. Siemens

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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.