Harriette Sheffer Abels Books

Medical emergency

By Harriette Sheffer Abels

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The commander of the EM 88 is stricken with what may be the first case of smallpox in several centuries.

Silent invaders

By Harriette Sheffer Abels

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An invading army of humanoids threatens to blow up any colony whose inhabitants will not vacate.

Forgotten world

By Harriette Sheffer Abels

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A malfunctioning engine forces the EM 88 to land on an uncharted asteroid which bears a strange resemblance to Earth.

Mystery on Mars

By Harriette Sheffer Abels

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While visiting the Mars colony, the crew of Emergency Spaceship EM 88 helps to rescue miners trapped by an earthquake and discovers some unusual inhabitants deep in the mountain.

Planet of ice

By Harriette Sheffer Abels

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The crew of Emergency Spaceship EM 88 is sent to rescue a colony from Venus when increasingly cold temperatures begin to freeze the life support systems.

Unwanted visitors

By Harriette Sheffer Abels

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The crew of Emergency Spaceship EM 88 discovers that the mysterious object that they have been sent to investigate is a vehicle for a group of amorphous blobs fleeing from their galaxy.

Medical emergency

By Harriette Sheffer Abels

Average: 0.00, 0 Ratings

The commander of the EM 88 is stricken with what may be the first case of smallpox in several centuries.

Silent invaders

By Harriette Sheffer Abels

Average: 0.00, 0 Ratings

An invading army of humanoids threatens to blow up any colony whose inhabitants will not vacate.

Forgotten world

By Harriette Sheffer Abels

Average: 0.00, 0 Ratings

A malfunctioning engine forces the EM 88 to land on an uncharted asteroid which bears a strange resemblance to Earth.

Future science

By Harriette Sheffer Abels

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Discusses innovations related to meteorology, automation, and space travel that may someday influence our lives.

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.