Andrew Farkas Books

Titta Ruffo: An Anthology

By Andrew Farkas

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Opera Biographies Opera Biographies Ser.

By Andrew Farkas

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Opera and concert singers

By Andrew Farkas

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Lawrence Tibbett

By Andrew Farkas

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Jussi (Opera Biography Series, No 7)

By Andrew Farkas, Anna Lisa Bjorling

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Sweden has given many great singers to the lyric stage, but none so widely acclaimed and admired in this century as Jussi Bjorling. While many other tenors have been hailed as successors to Enrico...

Enrico Caruso

By Andrew Farkas, Caruso Enrico, Enrico Jr. Caruso

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State learning and international change

By Andrew Farkas

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Andrew Farkas presents an evolutionary theory of how states adjust their foreign policies in response to international changes. Employing both formal models and computer simulations, Farkas explore...

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.