Heather Clark Books

The Ulster Renaissance: Poetry in Belfast 1962-1972

By Heather L. Clark

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Grief of Influence: Sylvia Plath and Ted Hughes

By Heather L. Clark

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Essays on Writing

By Lizbeth Bryant

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xii, 212 p. ; 21 cm

Red Comet

By Heather Clark

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PULITZER PRIZE FINALIST • The highly anticipated biography of Sylvia Plath that focuses on her remarkable literary and intellectual achievements, while restoring the woman behind the long-held myth...

Raven s Feather

By Heather Clark

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Organizations and Identities

By John Chandler, Jim Barry, Heather Clark

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Christmas Balloons FUNPAX

By DK Publishing

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Chai tea Sunday

By Heather A. Clark

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"Thirtysomething Nicky Fowler has it all-- a rewarding career, a loving husband and the perfect home. But when she and her husband suffer a complicated tragedy, the strain of two people dealing wit...

Elephant in the sky

By Heather A. Clark

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With a nine-year-old son with mental illness, a mother strives to find balance between her work and family.

Red Comet

By Heather Clark

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The first biography of this great and tragic poet that takes advantage of a wealth of new material, this is an unusually balanced, comprehensive and definitive life of Sylvia Plath. Determined not...

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.