Andrea Helman Books

Hide and Seek

By Andrea Helman

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Hide and Seek

By Andrea Helman

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1 2 3 Moose

By Art Wolfe, Andrea Helman

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Introduces the numbers one through twenty against a background of photographs and brief text describing animal and plant life found in the Pacific Northwest.

Northwest animal babies

By Art Wolfe

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Introduces some of the baby animals found in the Pacific Northwest, including raccoon kits, a bison calf, grey wolf pups, Coho salmon fry, Western Sandpiper chicks, and a cougar kitten.

Wild Colors

By Andrea Helman

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O is for orca

By Andrea Helman

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Photographs of the animals, plants, people, and places of the Pacific Northwest illustrate the letters of the alphabet.

1,2,3 moose

By Andrea Helman

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Introduces the numbers one through twenty against a background of photographs and brief text describing animal and plant life found in the Pacific Northwest.

Northwest Animal Babies

By Art Wolfe, Andrea Helman

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Caribou crossing animals of the Arctic National Wildlife Refuge

By Andrea Helman

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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.