Mary Jane Phillips Matz Books

Opera stars in the sun

By Mary Jane Phillips Matz

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The many lives of Otto Kahn

By Mary Jane Phillips Matz

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Rosa Ponselle

By Mary Jane Phillips Matz

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Rosa Ponselle (1897-1981) was one of the greatest American opera singers of the twentieth century. This definitive biography, published on the centenary of her birth, provides a compelling, in-dept...

Puccini

By William Weaver, Mary Jane Phillips Matz

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"Descended from four generations of distinguished composers and organists, Giacomo Puccini (1858-1924) was driven by family tradition and an ambitious mother to pursue a career that brought him wor...

Leonard Warren

By Mary Jane Phillips Matz

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"Leonard Warren, the great American baritone, was born on 21 April 1911 in New York City in the Bronx, the first of three children of parents who came from Russia. A descendant of three generations...

Giuseppe Verdi

By Mary Jane Phillips Matz

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Verdi

By Mary Jane Phillips Matz

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Washington National Opera 1956 2006

By D.C. Washington National Opera Washington, Mary Jane Phillips Matz

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Leonard Warren

By Mary Jane Phillips Matz

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Leonard Warren

By Mary Jane Phillips Matz

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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.