Sheldon L. Gerstenfeld Books

Zoo clues

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Text and cartoon illustrations present information about the physical characteristics, environment, social behavior, and diet of over thirty animals found in many zoos.

The aquarium take-along book

By Sheldon L. Gerstenfeld

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A guide to the natural environments, skills, and adaptations of water animals plus information about preserving marine life.

Zoo clues

By Sheldon L. Gerstenfeld

Average: 0.00, 0 Ratings

Text and cartoon illustrations present information about the physical characteristics, environment, social behavior, and diet of over thirty animals found in many zoos.

The cat care book

By Sheldon L. Gerstenfeld

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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.