Mary Higgins Clark Books

Two Little Girls in Blue

Average: 0.00, 0 Ratings

A pair of twin girls are kidnapped, the ransom paid, but only Kelly is returned, with a note saying Kathy has been killed. When Kelly begins getting telepathic information from Kathy, only their mo...

I Heard That Song Before

By Mary Higgins Clark

Average: 0.00, 0 Ratings

I Heard That Song Before

By Mary Higgins Clark

Average: 0.00, 0 Ratings

I Heard That Song Before

By Mary Higgins Clark

Average: 0.00, 0 Ratings

The Christmas Thief

By Mary Higgins Clark

Average: 0.00, 0 Ratings

The Christmas thief

By Mary Higgins Clark, Carol Higgins Clark

Average: 0.00, 0 Ratings

Lottery winner-turned-amateur sleuth Alvirah Meehan joins with private detective Regan Reilly to track down the ninety-foot tree, destined for display in Rockefeller Center, that vanished en route...

Kitchen Privileges

By Mary Higgins Clark

Average: 0.00, 0 Ratings

The second time around

By Mary Higgins Clark

Average: 0.00, 0 Ratings

When Nicholas Spencer, the charismatic head of a company that has developed an anticancer vaccine, disappears without a trace, reporter Marcia "Carley" DeCarlo is assigned the story.

Nighttime Is My Time

By Mary Higgins Clark

Average: 0.00, 0 Ratings

You Belong to Me Moonlight Becomes Your Pretend You Don t See Her

By Mary Higgins Clark

Average: 0.00, 0 Ratings

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.