Harriet Blackford Books

Gorilla s story

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Follows a young gorilla from birth to maturity as he learns to live in the African jungle, facing such threats as a hungry leopard and a big, older silverback. Colorful illustrations and text foll...

Gorilla's story

By Harriet Blackford

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Follows a young gorilla from birth to maturity as he learns to live in the African jungle, facing such threats as a hungry leopard and a big, older silverback. Colorful illustrations and text foll...

Tiger s Story

By Harriet Blackford

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Tiger s Story

By Harriet Blackford

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Tiger s Story

By Harriet Blackford

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Elephant s Story

By Harriet Blackford

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Let s Look at Trains

By Harriet Blackford

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Let s talk about dinosaurs

By Harriet Blackford

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Discusses the physical characteristics, behavior, territory, life cycle, and different types of dinosaurs; how they became extinct; and how scientists have learned about them through fossils.

Little Tiger

By Harriet Blackford

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Little Tiger

By Harriet Blackford

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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.