Katherine Marko Books

Hang Out the Flag

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In 1943, as she waits for her father to come home on leave, a sixth-grade girl in a midwestern town tries to find something special to do for the war effort, such as catching a German spy.

The sod turners

By Katherine Marko

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Animals in orbit

By Katherine Marko

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Discusses the animals originally sent up in space as experiments, and looks at currents projects being conducted on various plants and animals.

Time Goes on Forever First Book

By Katherine Marko

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How the wind blows

By Katherine Marko

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Describes the various types of winds and their names in different parts of the world and discusses both the destructive and beneficial aspects of wind.

Whales, giants of the sea

By Katherine Marko

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A look at whales, how they probably came to be, and their future.

Away to Fundy Bay

By Katherine Marko

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In 1775, thirteen-year-old Doone Ramsey flees to the Bay of Fundy side of Nova Scotia to escape the British press gangs and joins the rebels in the fight for independence from Great Britain.

Away to Fundy Bay

By Katherine Marko

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In 1775, thirteen-year-old Doone Ramsey flees to the Bay of Fundy side of Nova Scotia to escape the British press gangs and joins the rebels in the fight for independence from Great Britain.

Pocket babies

By Katherine Marko

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Examines marsupials, those animals that carry their babies in pouches, including the opossum, kangaroo, and Tasmanian devil.

God, when will I ever belong?

By Katherine Marko

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After a sequence of foster homes in which she was unhappy, 12-year-old Jeanie finds herself in a new one she dislikes for the same reasons.

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.