Petra Mathers Books

Victor and Christabel
Victor and Christabel

By Petra Mathers

Average: 0.00, 0 Ratings

The shy guard at an art museum falls in love with the sad young woman in a painting that mysteriously appears one day.

Read More
Kisses from Rosa
Kisses from Rosa

By Petra Mathers

Average: 0.00, 0 Ratings

While her mother is treated for a serious illness, Rosa stays with her aunt and cousin on a farm in the Black Forest.

Read More
Victor and Christabel
Victor and Christabel

By Petra Mathers

Average: 0.00, 0 Ratings

The shy guard at an art museum falls in love with the sad young woman in a painting that mysteriously appears one day.

Read More
Lottie s New Friend
Lottie s New Friend

By Petra Mathers

Average: 0.00, 0 Ratings

Read More
When Aunt Mattie got her wings
When Aunt Mattie got her wings

By Petra Mathers

Average: 0.00, 0 Ratings

When Aunt Mattie dies, best friends Lottie and Herbie console each other and celebrate Aunt Mattie's life by scattering her ashes and preparing her favorite snack--peanut butter and jelly sandwiche...

Read More
Button Up
Button Up

By Petra Mathers, Alice Schertle

Average: 0.00, 0 Ratings

Read More
Untitled Mathers 2
Untitled Mathers 2

By Petra Mathers

Average: 0.00, 0 Ratings

Read More
Cake for Herbie
Cake for Herbie

By Petra Mathers

Average: 0.00, 0 Ratings

Read More
A Cake for Herbie
A Cake for Herbie

By Petra Mathers

Average: 0.00, 0 Ratings

Read More

Related Articles from our Blog

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.

Read More