Angela Holzer Books

Sammy learns to talk

By Angela Holzer

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Gooey gummy geese

By Angela Holzer

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This book is designed to teach children how to say the "g" sound by using repetitive words with that sound in a humorous story about geese.

Lovely Lily

By Angela Holzer

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This book is designed to teach children how to say the "l" sound by using repetitive words with that sound in a humorous story about a girl.

Sometimes friends are wrong

By Angela Holzer

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This book is designed to teach children how to say the "r" sound by using repetitive words with that sound in a humorous story about friendship.

Fat Freddy s afraid to fall

By Angela Holzer

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This book is designed to teach children how to say the "f" sound by using repetitive words with that sound in a humorous story about a frog.

My dog Eddie

By Angela Holzer

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This book is designed to teach children how to say the "d" sound by using repetitive words with that sound in a humorous story about a boy and his dog.

We Are Different You And Me

By June Morgan, David Morgan, Angela Holzer

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Grace Anne Learns to Tell the Truth

By Cindy Anne Duncan, Angela Holzer, Manelle Oliphant

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Rehabilitationen Roms

By Angela Cornelia Holzer

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Zur Genealogie des Zivilisationsprozesses

By Friederike Felicitas Gunther, Angela Holzer, Enrico Muller

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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.