Sandra Markle Books

Crocodiles

By Sandra Markle

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Great White Sharks

By Sandra Markle

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Little lost bat

By Sandra Markle

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"Chronicles the early life of an orphaned Mexican free-tailed bat, from its birth to its adoption by a new mother. Includes back matter about bats"--Provided by publisher.

Little Lost Bat

By Sandra Markle

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Hip pocket papa

By Sandra Markle

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Hip-Pocket Papa

By Sandra Markle Author Alan Marks Illustrator

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Little papa, big jobSandra Markle and Alan Marks, creators of the Boston Globe/Horn Book Honor Award-winning A Mother's Journey, offer an up-close look at the miniature world of the hip-pocket frog...

Lions Animal Predators

By Sandra Markle

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Diving Beetles

By Sandra Markle

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Finding Home

By Sandra Markle Author Alan Marks Illustrator

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A remarkable story of survival.The creators of A MOTHER'S JOURNEY and LITTLE LOST BAT, Sandra Markle and Alan Marks team up again to chronicle the challenges faced by a mother koala: protecting her...

Family pack

By Sandra Markle

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A young wolf, taken from her pack in Canada to Yellowstone National Park, struggles alone to master the skills of hunting and survival until she finds a lone male and begins a new pack with him.

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.