Marian Calabro Books

Operation Grizzly Bear

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Describes the thirteen-year-study of grizzly bears done by John and Frank Craighead in Yellowstone National Park, in which their use of the radio-tracking collar and other innovations added to the...

Zap!: A Brief History of Television

By Marian Calabro

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Surveys the history of television and the different kinds of programs broadcast, including situation comedies, dramas, and children's television.

The Perilous Journey of the Donner Party

By Marian Calabro

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Uses materials from letters and diaries written by survivors of the Donner Party to relate the experiences of that ill-fated group as they endured horrific circumstances on their way to California...

The perilous journey of the Donner Party

By Marian Calabro

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Uses materials from letters and diaries written by survivors of the Donner Party to relate the experiences of that ill-fated group as they endured horrific circumstances on their way to California...

Great courtroom lawyers

By Marian Calabro

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Making things work

By Marian Calabro

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Flying high again

By Marian Calabro

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Clinton County ARC past present

By Marian Calabro

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The Pep Boys Company history book

By Marian Calabro

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Annin Flagmakers

By Marian Calabro

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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.