Sylvia A. Johnson Books

Elephant seals

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Describes the physical characteristics, habits, and natural environment of the elephant seals, so named because of their size and the proboscis that the males have on their noses.

Hermit crabs

By Sylvia A. Johnson

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Describes the physical characteristics, habits, and natural environment of the hermit crab.

Water insects

By Sylvia A. Johnson

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Describes the physical characteristics, behavior, and life cycles of some insects that spend most of their lives in the water.

Wheat

By Sylvia A. Johnson

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Explains the life cycle of wheat, its varieties, its cultivation, its harvesting, and its importance in feeding millions of people all over the world.

Albatrosses of Midway Island

By Sylvia A. Johnson

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Describes the characteristics and activities of the Laysan albatross which flies to Midway Island to breed. Also discusses how birds and humans have learned to live together on this small island in...

Downy the duckling

By Sylvia A. Johnson

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Illustrates a duckling's birth and first month of life using text and photographs followed by general information about ducks.

Penny and Pete, the lambs

By Sylvia A. Johnson

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Two children living on a sheep farm take care of their pet lambs, Penny and Pete.

Elephants around the world

By Sylvia A. Johnson

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A young boy learns about elephants from a visit to the zoo, attending the circus, and reading at home.

The lions of Africa

By Sylvia A. Johnson

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Luke and Ted learn about the habits and characteristics of lions when their uncle, a wildlife photographer, shows them films he took in Africa.

Songbirds

By Sylvia A. Johnson

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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.