John Hamberger Books

Describes the physical characteristics and habits of an eagle, osprey, and a falcon and discusses the effects of environmental pollutants on their survival.

A Sleepless Day

By John Hamberger

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Sea Monsters of Long Ago

By John Hamberger, Millicent E. Selsam

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Prairie dogs in prairie dog town

By Irmengarde Eberle

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Chronicles life in a prairie dog village showing how a mother raises her litter and educates them to life in the prairie community.

Birth of a pond

By John Hamberger

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Describes a man-made pond which gradually becomes part of nature as it begins to support plant and animal life.

Birth of a pond

By John Hamberger

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Describes a man-made pond which gradually becomes part of nature as it begins to support plant and animal life.

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.