Lisa Grunwald Books

New Year s Eve

By Lisa Grunwald

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Whatever makes you happy

By Lisa Grunwald

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Time After Time

By Lisa Grunwald

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A magical love story, inspired by the legend of a woman who vanished from Grand Central Terminal, sweeps readers from the 1920s to World War II and beyond. “Readers who enjoyed Audrey Ni...

Whatever Makes You Happy

By Lisa Grunwald

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What does it take to be happy? How happy is happy enough? And what does “happy” mean, anyway? So asks Sally Farber–wife, mother, daughter, friend, working woman, and lover–i...

The Irresistible Henry House

By Lisa Grunwald

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“Clever and accomplished . . . A little Irving, a little Doctorow, a little Winston Groom—[The Irresistible Henry House] is storytelling for story lovers; realism with an enchanting tou...

Whatever Makes You Happy: A Novel

By Lisa Grunwald

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The irresistible Henry House

By Lisa Grunwald

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In the mid-twentieth century in a home economics program at a prominent university, real babies are being used to teach mothering skills to young women. For a young man raised in these unlikely cir...

The irresistible Henry House

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Time After Time

By Lisa Grunwald

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The marriage book

By Stephen J. Adler, Lisa Grunwald

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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.